21493040

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11681}}^1$

素因数の和:11717

約数の個数: 40

約数和(自身を含む): 52148448

約数和(自身を除く): 30655408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11681, 23362, 46724, 58405, 93448, 116810, 186896, 233620, 268663, 467240, 537326, 934480, 1074652, 1343315, 2149304, 2686630, 4298608, 5373260, 10746520, 21493040]

約数ペア:

[(1, 21493040), (2, 10746520), (4, 5373260), (5, 4298608), (8, 2686630), (10, 2149304), (16, 1343315), (20, 1074652), (23, 934480), (40, 537326), (46, 467240), (80, 268663), (92, 233620), (115, 186896), (184, 116810), (230, 93448), (368, 58405), (460, 46724), (920, 23362), (1840, 11681)]