161200000

素因数分解:

$2^7\times 5^5\times {\mathrm{13}}^1\times {\mathrm{31}}^1$

素因数の和:83

約数の個数: 192

約数和(自身を含む): 446221440

約数和(自身を除く): 285021440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 64, 65, 80, 100, 104, 124, 125, 128, 130, 155, 160, 200, 208, 248, 250, 260, 310, 320, 325, 400, 403, 416, 496, 500, 520, 620, 625, 640, 650, 775, 800, 806, 832, 992, 1000, 1040, 1240, 1250, 1300, 1550, 1600, 1612, 1625, 1664, 1984, 2000, 2015, 2080, 2480, 2500, 2600, 3100, 3125, 3200, 3224, 3250, 3875, 3968, 4000, 4030, 4160, 4960, 5000, 5200, 6200, 6250, 6448, 6500, 7750, 8000, 8060, 8125, 8320, 9920, 10000, 10075, 10400, 12400, 12500, 12896, 13000, 15500, 16000, 16120, 16250, 19375, 19840, 20000, 20150, 20800, 24800, 25000, 25792, 26000, 31000, 32240, 32500, 38750, 40000, 40300, 40625, 41600, 49600, 50000, 50375, 51584, 52000, 62000, 64480, 65000, 77500, 80000, 80600, 81250, 96875, 99200, 100000, 100750, 104000, 124000, 128960, 130000, 155000, 161200, 162500, 193750, 200000, 201500, 208000, 248000, 251875, 257920, 260000, 310000, 322400, 325000, 387500, 400000, 403000, 496000, 503750, 520000, 620000, 644800, 650000, 775000, 806000, 1007500, 1040000, 1240000, 1259375, 1289600, 1300000, 1550000, 1612000, 2015000, 2480000, 2518750, 2600000, 3100000, 3224000, 4030000, 5037500, 5200000, 6200000, 6448000, 8060000, 10075000, 12400000, 16120000, 20150000, 32240000, 40300000, 80600000, 161200000]

約数ペア:

[(1, 161200000), (2, 80600000), (4, 40300000), (5, 32240000), (8, 20150000), (10, 16120000), (13, 12400000), (16, 10075000), (20, 8060000), (25, 6448000), (26, 6200000), (31, 5200000), (32, 5037500), (40, 4030000), (50, 3224000), (52, 3100000), (62, 2600000), (64, 2518750), (65, 2480000), (80, 2015000), (100, 1612000), (104, 1550000), (124, 1300000), (125, 1289600), (128, 1259375), (130, 1240000), (155, 1040000), (160, 1007500), (200, 806000), (208, 775000), (248, 650000), (250, 644800), (260, 620000), (310, 520000), (320, 503750), (325, 496000), (400, 403000), (403, 400000), (416, 387500), (496, 325000), (500, 322400), (520, 310000), (620, 260000), (625, 257920), (640, 251875), (650, 248000), (775, 208000), (800, 201500), (806, 200000), (832, 193750), (992, 162500), (1000, 161200), (1040, 155000), (1240, 130000), (1250, 128960), (1300, 124000), (1550, 104000), (1600, 100750), (1612, 100000), (1625, 99200), (1664, 96875), (1984, 81250), (2000, 80600), (2015, 80000), (2080, 77500), (2480, 65000), (2500, 64480), (2600, 62000), (3100, 52000), (3125, 51584), (3200, 50375), (3224, 50000), (3250, 49600), (3875, 41600), (3968, 40625), (4000, 40300), (4030, 40000), (4160, 38750), (4960, 32500), (5000, 32240), (5200, 31000), (6200, 26000), (6250, 25792), (6448, 25000), (6500, 24800), (7750, 20800), (8000, 20150), (8060, 20000), (8125, 19840), (8320, 19375), (9920, 16250), (10000, 16120), (10075, 16000), (10400, 15500), (12400, 13000), (12500, 12896)]