11912840

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{691}}^1$

素因数の和:1133

約数の個数: 32

約数和(自身を含む): 26904960

約数和(自身を除く): 14992120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 691, 862, 1382, 1724, 2155, 2764, 3448, 3455, 4310, 5528, 6910, 8620, 13820, 17240, 27640, 297821, 595642, 1191284, 1489105, 2382568, 2978210, 5956420, 11912840]

約数ペア:

[(1, 11912840), (2, 5956420), (4, 2978210), (5, 2382568), (8, 1489105), (10, 1191284), (20, 595642), (40, 297821), (431, 27640), (691, 17240), (862, 13820), (1382, 8620), (1724, 6910), (2155, 5528), (2764, 4310), (3448, 3455)]