21962720

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10559}}^1$

素因数の和:10587

約数の個数: 48

約数和(自身を含む): 55883520

約数和(自身を除く): 33920800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10559, 21118, 42236, 52795, 84472, 105590, 137267, 168944, 211180, 274534, 337888, 422360, 549068, 686335, 844720, 1098136, 1372670, 1689440, 2196272, 2745340, 4392544, 5490680, 10981360, 21962720]

約数ペア:

[(1, 21962720), (2, 10981360), (4, 5490680), (5, 4392544), (8, 2745340), (10, 2196272), (13, 1689440), (16, 1372670), (20, 1098136), (26, 844720), (32, 686335), (40, 549068), (52, 422360), (65, 337888), (80, 274534), (104, 211180), (130, 168944), (160, 137267), (208, 105590), (260, 84472), (416, 52795), (520, 42236), (1040, 21118), (2080, 10559)]