81406000

素因数分解:

$2^4\times 5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:168

約数の個数: 160

約数和(自身を含む): 220985856

約数和(自身を除く): 139579856

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 40, 50, 52, 62, 65, 80, 100, 101, 104, 124, 125, 130, 155, 200, 202, 208, 248, 250, 260, 310, 325, 400, 403, 404, 496, 500, 505, 520, 620, 650, 775, 806, 808, 1000, 1010, 1040, 1240, 1300, 1313, 1550, 1612, 1616, 1625, 2000, 2015, 2020, 2480, 2525, 2600, 2626, 3100, 3131, 3224, 3250, 3875, 4030, 4040, 5050, 5200, 5252, 6200, 6262, 6448, 6500, 6565, 7750, 8060, 8080, 10075, 10100, 10504, 12400, 12524, 12625, 13000, 13130, 15500, 15655, 16120, 20150, 20200, 21008, 25048, 25250, 26000, 26260, 31000, 31310, 32240, 32825, 40300, 40400, 40703, 50096, 50375, 50500, 52520, 62000, 62620, 65650, 78275, 80600, 81406, 100750, 101000, 105040, 125240, 131300, 156550, 161200, 162812, 164125, 201500, 202000, 203515, 250480, 262600, 313100, 325624, 328250, 391375, 403000, 407030, 525200, 626200, 651248, 656500, 782750, 806000, 814060, 1017575, 1252400, 1313000, 1565500, 1628120, 2035150, 2626000, 3131000, 3256240, 4070300, 5087875, 6262000, 8140600, 10175750, 16281200, 20351500, 40703000, 81406000]

約数ペア:

[(1, 81406000), (2, 40703000), (4, 20351500), (5, 16281200), (8, 10175750), (10, 8140600), (13, 6262000), (16, 5087875), (20, 4070300), (25, 3256240), (26, 3131000), (31, 2626000), (40, 2035150), (50, 1628120), (52, 1565500), (62, 1313000), (65, 1252400), (80, 1017575), (100, 814060), (101, 806000), (104, 782750), (124, 656500), (125, 651248), (130, 626200), (155, 525200), (200, 407030), (202, 403000), (208, 391375), (248, 328250), (250, 325624), (260, 313100), (310, 262600), (325, 250480), (400, 203515), (403, 202000), (404, 201500), (496, 164125), (500, 162812), (505, 161200), (520, 156550), (620, 131300), (650, 125240), (775, 105040), (806, 101000), (808, 100750), (1000, 81406), (1010, 80600), (1040, 78275), (1240, 65650), (1300, 62620), (1313, 62000), (1550, 52520), (1612, 50500), (1616, 50375), (1625, 50096), (2000, 40703), (2015, 40400), (2020, 40300), (2480, 32825), (2525, 32240), (2600, 31310), (2626, 31000), (3100, 26260), (3131, 26000), (3224, 25250), (3250, 25048), (3875, 21008), (4030, 20200), (4040, 20150), (5050, 16120), (5200, 15655), (5252, 15500), (6200, 13130), (6262, 13000), (6448, 12625), (6500, 12524), (6565, 12400), (7750, 10504), (8060, 10100), (8080, 10075)]