28202840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{863}}^1$

素因数の和:936

約数の個数: 64

約数和(自身を含む): 68428800

約数和(自身を除く): 40225960

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 760, 817, 860, 863, 1634, 1720, 1726, 3268, 3452, 4085, 4315, 6536, 6904, 8170, 8630, 16340, 16397, 17260, 32680, 32794, 34520, 37109, 65588, 74218, 81985, 131176, 148436, 163970, 185545, 296872, 327940, 371090, 655880, 705071, 742180, 1410142, 1484360, 2820284, 3525355, 5640568, 7050710, 14101420, 28202840]

約数ペア:

[(1, 28202840), (2, 14101420), (4, 7050710), (5, 5640568), (8, 3525355), (10, 2820284), (19, 1484360), (20, 1410142), (38, 742180), (40, 705071), (43, 655880), (76, 371090), (86, 327940), (95, 296872), (152, 185545), (172, 163970), (190, 148436), (215, 131176), (344, 81985), (380, 74218), (430, 65588), (760, 37109), (817, 34520), (860, 32794), (863, 32680), (1634, 17260), (1720, 16397), (1726, 16340), (3268, 8630), (3452, 8170), (4085, 6904), (4315, 6536)]