21345376

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{3947}}^1$

素因数の和:3983

約数の個数: 36

約数和(自身を含む): 45516492

約数和(自身を除く): 24171116

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 169, 208, 338, 416, 676, 1352, 2704, 3947, 5408, 7894, 15788, 31576, 51311, 63152, 102622, 126304, 205244, 410488, 667043, 820976, 1334086, 1641952, 2668172, 5336344, 10672688, 21345376]

約数ペア:

[(1, 21345376), (2, 10672688), (4, 5336344), (8, 2668172), (13, 1641952), (16, 1334086), (26, 820976), (32, 667043), (52, 410488), (104, 205244), (169, 126304), (208, 102622), (338, 63152), (416, 51311), (676, 31576), (1352, 15788), (2704, 7894), (3947, 5408)]