21177416

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{1297}}^1$

素因数の和:1473

約数の個数: 32

約数和(自身を含む): 43067640

約数和(自身を除く): 21890224

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 157, 314, 628, 1256, 1297, 2041, 2594, 4082, 5188, 8164, 10376, 16328, 16861, 33722, 67444, 134888, 203629, 407258, 814516, 1629032, 2647177, 5294354, 10588708, 21177416]

約数ペア:

[(1, 21177416), (2, 10588708), (4, 5294354), (8, 2647177), (13, 1629032), (26, 814516), (52, 407258), (104, 203629), (157, 134888), (314, 67444), (628, 33722), (1256, 16861), (1297, 16328), (2041, 10376), (2594, 8164), (4082, 5188)]