21907730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{431}}^1$

素因数の和:491

約数の個数: 64

約数和(自身を含む): 47029248

約数和(自身を除く): 25121518

約数列:

[1, 2, 5, 10, 13, 17, 23, 26, 34, 46, 65, 85, 115, 130, 170, 221, 230, 299, 391, 431, 442, 598, 782, 862, 1105, 1495, 1955, 2155, 2210, 2990, 3910, 4310, 5083, 5603, 7327, 9913, 10166, 11206, 14654, 19826, 25415, 28015, 36635, 49565, 50830, 56030, 73270, 95251, 99130, 128869, 168521, 190502, 257738, 337042, 476255, 644345, 842605, 952510, 1288690, 1685210, 2190773, 4381546, 10953865, 21907730]

約数ペア:

[(1, 21907730), (2, 10953865), (5, 4381546), (10, 2190773), (13, 1685210), (17, 1288690), (23, 952510), (26, 842605), (34, 644345), (46, 476255), (65, 337042), (85, 257738), (115, 190502), (130, 168521), (170, 128869), (221, 99130), (230, 95251), (299, 73270), (391, 56030), (431, 50830), (442, 49565), (598, 36635), (782, 28015), (862, 25415), (1105, 19826), (1495, 14654), (1955, 11206), (2155, 10166), (2210, 9913), (2990, 7327), (3910, 5603), (4310, 5083)]