40420240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{811}}^1$

素因数の和:920

約数の個数: 80

約数和(自身を含む): 108743040

約数和(自身を除く): 68322800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 280, 356, 445, 560, 623, 712, 811, 890, 1246, 1424, 1622, 1780, 2492, 3115, 3244, 3560, 4055, 4984, 5677, 6230, 6488, 7120, 8110, 9968, 11354, 12460, 12976, 16220, 22708, 24920, 28385, 32440, 45416, 49840, 56770, 64880, 72179, 90832, 113540, 144358, 227080, 288716, 360895, 454160, 505253, 577432, 721790, 1010506, 1154864, 1443580, 2021012, 2526265, 2887160, 4042024, 5052530, 5774320, 8084048, 10105060, 20210120, 40420240]

約数ペア:

[(1, 40420240), (2, 20210120), (4, 10105060), (5, 8084048), (7, 5774320), (8, 5052530), (10, 4042024), (14, 2887160), (16, 2526265), (20, 2021012), (28, 1443580), (35, 1154864), (40, 1010506), (56, 721790), (70, 577432), (80, 505253), (89, 454160), (112, 360895), (140, 288716), (178, 227080), (280, 144358), (356, 113540), (445, 90832), (560, 72179), (623, 64880), (712, 56770), (811, 49840), (890, 45416), (1246, 32440), (1424, 28385), (1622, 24920), (1780, 22708), (2492, 16220), (3115, 12976), (3244, 12460), (3560, 11354), (4055, 9968), (4984, 8110), (5677, 7120), (6230, 6488)]