15880216

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{997}}^1$

素因数の和:1195

約数の個数: 32

約数和(自身を含む): 32694480

約数和(自身を除く): 16814264

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 181, 362, 724, 997, 1448, 1991, 1994, 3982, 3988, 7964, 7976, 10967, 15928, 21934, 43868, 87736, 180457, 360914, 721828, 1443656, 1985027, 3970054, 7940108, 15880216]

約数ペア:

[(1, 15880216), (2, 7940108), (4, 3970054), (8, 1985027), (11, 1443656), (22, 721828), (44, 360914), (88, 180457), (181, 87736), (362, 43868), (724, 21934), (997, 15928), (1448, 10967), (1991, 7976), (1994, 7964), (3982, 3988)]