81248830000

素因数分解:

$2^4\times 5^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{20161}}^1$

素因数の和:20233

約数の個数: 200

約数和(自身を含む): 218687697536

約数和(自身を除く): 137438867536

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 40, 50, 52, 62, 65, 80, 100, 104, 124, 125, 130, 155, 200, 208, 248, 250, 260, 310, 325, 400, 403, 496, 500, 520, 620, 625, 650, 775, 806, 1000, 1040, 1240, 1250, 1300, 1550, 1612, 1625, 2000, 2015, 2480, 2500, 2600, 3100, 3224, 3250, 3875, 4030, 5000, 5200, 6200, 6448, 6500, 7750, 8060, 8125, 10000, 10075, 12400, 13000, 15500, 16120, 16250, 19375, 20150, 20161, 26000, 31000, 32240, 32500, 38750, 40300, 40322, 50375, 62000, 65000, 77500, 80600, 80644, 100750, 100805, 130000, 155000, 161200, 161288, 201500, 201610, 251875, 262093, 310000, 322576, 403000, 403220, 503750, 504025, 524186, 624991, 806000, 806440, 1007500, 1008050, 1048372, 1249982, 1310465, 1612880, 2015000, 2016100, 2096744, 2499964, 2520125, 2620930, 3124955, 4030000, 4032200, 4193488, 4999928, 5040250, 5241860, 6249910, 6552325, 8064400, 8124883, 9999856, 10080500, 10483720, 12499820, 12600625, 13104650, 15624775, 16249766, 20161000, 20967440, 24999640, 25201250, 26209300, 31249550, 32499532, 32761625, 40322000, 40624415, 49999280, 50402500, 52418600, 62499100, 64999064, 65523250, 78123875, 81248830, 100805000, 104837200, 124998200, 129998128, 131046500, 156247750, 162497660, 163808125, 201610000, 203122075, 249996400, 262093000, 312495500, 324995320, 327616250, 390619375, 406244150, 524186000, 624991000, 649990640, 655232500, 781238750, 812488300, 1015610375, 1249982000, 1310465000, 1562477500, 1624976600, 2031220750, 2620930000, 3124955000, 3249953200, 4062441500, 5078051875, 6249910000, 8124883000, 10156103750, 16249766000, 20312207500, 40624415000, 81248830000]

約数ペア:

[(1, 81248830000), (2, 40624415000), (4, 20312207500), (5, 16249766000), (8, 10156103750), (10, 8124883000), (13, 6249910000), (16, 5078051875), (20, 4062441500), (25, 3249953200), (26, 3124955000), (31, 2620930000), (40, 2031220750), (50, 1624976600), (52, 1562477500), (62, 1310465000), (65, 1249982000), (80, 1015610375), (100, 812488300), (104, 781238750), (124, 655232500), (125, 649990640), (130, 624991000), (155, 524186000), (200, 406244150), (208, 390619375), (248, 327616250), (250, 324995320), (260, 312495500), (310, 262093000), (325, 249996400), (400, 203122075), (403, 201610000), (496, 163808125), (500, 162497660), (520, 156247750), (620, 131046500), (625, 129998128), (650, 124998200), (775, 104837200), (806, 100805000), (1000, 81248830), (1040, 78123875), (1240, 65523250), (1250, 64999064), (1300, 62499100), (1550, 52418600), (1612, 50402500), (1625, 49999280), (2000, 40624415), (2015, 40322000), (2480, 32761625), (2500, 32499532), (2600, 31249550), (3100, 26209300), (3224, 25201250), (3250, 24999640), (3875, 20967440), (4030, 20161000), (5000, 16249766), (5200, 15624775), (6200, 13104650), (6448, 12600625), (6500, 12499820), (7750, 10483720), (8060, 10080500), (8125, 9999856), (10000, 8124883), (10075, 8064400), (12400, 6552325), (13000, 6249910), (15500, 5241860), (16120, 5040250), (16250, 4999928), (19375, 4193488), (20150, 4032200), (20161, 4030000), (26000, 3124955), (31000, 2620930), (32240, 2520125), (32500, 2499964), (38750, 2096744), (40300, 2016100), (40322, 2015000), (50375, 1612880), (62000, 1310465), (65000, 1249982), (77500, 1048372), (80600, 1008050), (80644, 1007500), (100750, 806440), (100805, 806000), (130000, 624991), (155000, 524186), (161200, 504025), (161288, 503750), (201500, 403220), (201610, 403000), (251875, 322576), (262093, 310000)]