20165286875

素因数分解:

$5^4\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:366

約数の個数: 80

約数和(自身を含む): 26818615296

約数和(自身を除く): 6653328421

約数列:

[1, 5, 25, 31, 71, 107, 125, 137, 155, 355, 535, 625, 685, 775, 1775, 2201, 2675, 3317, 3425, 3875, 4247, 7597, 8875, 9727, 11005, 13375, 14659, 16585, 17125, 19375, 21235, 37985, 44375, 48635, 55025, 66875, 73295, 82925, 85625, 106175, 189925, 235507, 243175, 275125, 301537, 366475, 414625, 454429, 530875, 949625, 1040789, 1177535, 1215875, 1375625, 1507685, 1832375, 2073125, 2272145, 2654375, 4748125, 5203945, 5887675, 6079375, 7538425, 9161875, 11360725, 26019725, 29438375, 32264459, 37692125, 56803625, 130098625, 147191875, 161322295, 188460625, 284018125, 650493125, 806611475, 4033057375, 20165286875]

約数ペア:

[(1, 20165286875), (5, 4033057375), (25, 806611475), (31, 650493125), (71, 284018125), (107, 188460625), (125, 161322295), (137, 147191875), (155, 130098625), (355, 56803625), (535, 37692125), (625, 32264459), (685, 29438375), (775, 26019725), (1775, 11360725), (2201, 9161875), (2675, 7538425), (3317, 6079375), (3425, 5887675), (3875, 5203945), (4247, 4748125), (7597, 2654375), (8875, 2272145), (9727, 2073125), (11005, 1832375), (13375, 1507685), (14659, 1375625), (16585, 1215875), (17125, 1177535), (19375, 1040789), (21235, 949625), (37985, 530875), (44375, 454429), (48635, 414625), (55025, 366475), (66875, 301537), (73295, 275125), (82925, 243175), (85625, 235507), (106175, 189925)]