20210361580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1\times {\mathrm{1811}}^1$

素因数の和:2191

約数の個数: 96

約数和(自身を含む): 44712622080

約数和(自身を除く): 24502260500

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 71, 116, 142, 145, 271, 284, 290, 355, 542, 580, 710, 1084, 1355, 1420, 1811, 2059, 2710, 3622, 4118, 5420, 7244, 7859, 8236, 9055, 10295, 15718, 18110, 19241, 20590, 31436, 36220, 38482, 39295, 41180, 52519, 76964, 78590, 96205, 105038, 128581, 157180, 192410, 210076, 257162, 262595, 384820, 490781, 514324, 525190, 557989, 642905, 981562, 1050380, 1115978, 1285810, 1963124, 2231956, 2453905, 2571620, 2789945, 3728849, 4907810, 5579890, 7457698, 9815620, 11159780, 14232649, 14915396, 18644245, 28465298, 34845451, 37288490, 56930596, 69690902, 71163245, 74576980, 139381804, 142326490, 174227255, 284652980, 348454510, 696909020, 1010518079, 2021036158, 4042072316, 5052590395, 10105180790, 20210361580]

約数ペア:

[(1, 20210361580), (2, 10105180790), (4, 5052590395), (5, 4042072316), (10, 2021036158), (20, 1010518079), (29, 696909020), (58, 348454510), (71, 284652980), (116, 174227255), (142, 142326490), (145, 139381804), (271, 74576980), (284, 71163245), (290, 69690902), (355, 56930596), (542, 37288490), (580, 34845451), (710, 28465298), (1084, 18644245), (1355, 14915396), (1420, 14232649), (1811, 11159780), (2059, 9815620), (2710, 7457698), (3622, 5579890), (4118, 4907810), (5420, 3728849), (7244, 2789945), (7859, 2571620), (8236, 2453905), (9055, 2231956), (10295, 1963124), (15718, 1285810), (18110, 1115978), (19241, 1050380), (20590, 981562), (31436, 642905), (36220, 557989), (38482, 525190), (39295, 514324), (41180, 490781), (52519, 384820), (76964, 262595), (78590, 257162), (96205, 210076), (105038, 192410), (128581, 157180)]