21207992

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3343}}^1$

素因数の和:3423

約数の個数: 32

約数和(自身を含む): 43538880

約数和(自身を除く): 22330888

約数列:

[1, 2, 4, 8, 13, 26, 52, 61, 104, 122, 244, 488, 793, 1586, 3172, 3343, 6344, 6686, 13372, 26744, 43459, 86918, 173836, 203923, 347672, 407846, 815692, 1631384, 2650999, 5301998, 10603996, 21207992]

約数ペア:

[(1, 21207992), (2, 10603996), (4, 5301998), (8, 2650999), (13, 1631384), (26, 815692), (52, 407846), (61, 347672), (104, 203923), (122, 173836), (244, 86918), (488, 43459), (793, 26744), (1586, 13372), (3172, 6686), (3343, 6344)]