21402290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{811}}^1$

素因数の和:867

約数の個数: 64

約数和(自身を含む): 49109760

約数和(自身を除く): 27707470

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 29, 35, 58, 65, 70, 91, 130, 145, 182, 203, 290, 377, 406, 455, 754, 811, 910, 1015, 1622, 1885, 2030, 2639, 3770, 4055, 5278, 5677, 8110, 10543, 11354, 13195, 21086, 23519, 26390, 28385, 47038, 52715, 56770, 73801, 105430, 117595, 147602, 164633, 235190, 305747, 329266, 369005, 611494, 738010, 823165, 1528735, 1646330, 2140229, 3057470, 4280458, 10701145, 21402290]

約数ペア:

[(1, 21402290), (2, 10701145), (5, 4280458), (7, 3057470), (10, 2140229), (13, 1646330), (14, 1528735), (26, 823165), (29, 738010), (35, 611494), (58, 369005), (65, 329266), (70, 305747), (91, 235190), (130, 164633), (145, 147602), (182, 117595), (203, 105430), (290, 73801), (377, 56770), (406, 52715), (455, 47038), (754, 28385), (811, 26390), (910, 23519), (1015, 21086), (1622, 13195), (1885, 11354), (2030, 10543), (2639, 8110), (3770, 5677), (4055, 5278)]