80451820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:523

約数の個数: 72

約数和(自身を含む): 185673600

約数和(自身を除く): 105221780

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 124, 155, 170, 289, 310, 340, 449, 527, 578, 620, 898, 1054, 1156, 1445, 1796, 2108, 2245, 2635, 2890, 4490, 5270, 5780, 7633, 8959, 8980, 10540, 13919, 15266, 17918, 27838, 30532, 35836, 38165, 44795, 55676, 69595, 76330, 89590, 129761, 139190, 152660, 179180, 236623, 259522, 278380, 473246, 519044, 648805, 946492, 1183115, 1297610, 2366230, 2595220, 4022591, 4732460, 8045182, 16090364, 20112955, 40225910, 80451820]

約数ペア:

[(1, 80451820), (2, 40225910), (4, 20112955), (5, 16090364), (10, 8045182), (17, 4732460), (20, 4022591), (31, 2595220), (34, 2366230), (62, 1297610), (68, 1183115), (85, 946492), (124, 648805), (155, 519044), (170, 473246), (289, 278380), (310, 259522), (340, 236623), (449, 179180), (527, 152660), (578, 139190), (620, 129761), (898, 89590), (1054, 76330), (1156, 69595), (1445, 55676), (1796, 44795), (2108, 38165), (2245, 35836), (2635, 30532), (2890, 27838), (4490, 17918), (5270, 15266), (5780, 13919), (7633, 10540), (8959, 8980)]