21285405505

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{521}}^1\times {\mathrm{6907}}^1$

素因数の和:7466

約数の個数: 48

約数和(自身を含む): 31674893184

約数和(自身を除く): 10389487679

約数列:

[1, 5, 7, 13, 35, 65, 91, 169, 455, 521, 845, 1183, 2605, 3647, 5915, 6773, 6907, 18235, 33865, 34535, 47411, 48349, 88049, 89791, 237055, 241745, 440245, 448955, 616343, 628537, 1167283, 3081715, 3142685, 3598547, 5836415, 8170981, 17992735, 25189829, 40854905, 46781111, 125949145, 233905555, 327467777, 608154443, 1637338885, 3040772215, 4257081101, 21285405505]

約数ペア:

[(1, 21285405505), (5, 4257081101), (7, 3040772215), (13, 1637338885), (35, 608154443), (65, 327467777), (91, 233905555), (169, 125949145), (455, 46781111), (521, 40854905), (845, 25189829), (1183, 17992735), (2605, 8170981), (3647, 5836415), (5915, 3598547), (6773, 3142685), (6907, 3081715), (18235, 1167283), (33865, 628537), (34535, 616343), (47411, 448955), (48349, 440245), (88049, 241745), (89791, 237055)]