449873840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{881}}^1$

素因数の和:1398

約数の個数: 80

約数和(自身を含む): 1129990176

約数和(自身を除く): 680116336

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 491, 520, 881, 982, 1040, 1762, 1964, 2455, 3524, 3928, 4405, 4910, 6383, 7048, 7856, 8810, 9820, 11453, 12766, 14096, 17620, 19640, 22906, 25532, 31915, 35240, 39280, 45812, 51064, 57265, 63830, 70480, 91624, 102128, 114530, 127660, 183248, 229060, 255320, 432571, 458120, 510640, 865142, 916240, 1730284, 2162855, 3460568, 4325710, 5623423, 6921136, 8651420, 11246846, 17302840, 22493692, 28117115, 34605680, 44987384, 56234230, 89974768, 112468460, 224936920, 449873840]

約数ペア:

[(1, 449873840), (2, 224936920), (4, 112468460), (5, 89974768), (8, 56234230), (10, 44987384), (13, 34605680), (16, 28117115), (20, 22493692), (26, 17302840), (40, 11246846), (52, 8651420), (65, 6921136), (80, 5623423), (104, 4325710), (130, 3460568), (208, 2162855), (260, 1730284), (491, 916240), (520, 865142), (881, 510640), (982, 458120), (1040, 432571), (1762, 255320), (1964, 229060), (2455, 183248), (3524, 127660), (3928, 114530), (4405, 102128), (4910, 91624), (6383, 70480), (7048, 63830), (7856, 57265), (8810, 51064), (9820, 45812), (11453, 39280), (12766, 35240), (14096, 31915), (17620, 25532), (19640, 22906)]