25211920

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3541}}^1$

素因数の和:3643

約数の個数: 40

約数和(自身を含む): 59293080

約数和(自身を除く): 34081160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3541, 3560, 7082, 7120, 14164, 17705, 28328, 35410, 56656, 70820, 141640, 283280, 315149, 630298, 1260596, 1575745, 2521192, 3151490, 5042384, 6302980, 12605960, 25211920]

約数ペア:

[(1, 25211920), (2, 12605960), (4, 6302980), (5, 5042384), (8, 3151490), (10, 2521192), (16, 1575745), (20, 1260596), (40, 630298), (80, 315149), (89, 283280), (178, 141640), (356, 70820), (445, 56656), (712, 35410), (890, 28328), (1424, 17705), (1780, 14164), (3541, 7120), (3560, 7082)]