28770520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:436

約数の個数: 64

約数和(自身を含む): 67767840

約数和(自身を除く): 38997320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 53, 82, 106, 164, 205, 212, 265, 328, 331, 410, 424, 530, 662, 820, 1060, 1324, 1640, 1655, 2120, 2173, 2648, 3310, 4346, 6620, 8692, 10865, 13240, 13571, 17384, 17543, 21730, 27142, 35086, 43460, 54284, 67855, 70172, 86920, 87715, 108568, 135710, 140344, 175430, 271420, 350860, 542840, 701720, 719263, 1438526, 2877052, 3596315, 5754104, 7192630, 14385260, 28770520]

約数ペア:

[(1, 28770520), (2, 14385260), (4, 7192630), (5, 5754104), (8, 3596315), (10, 2877052), (20, 1438526), (40, 719263), (41, 701720), (53, 542840), (82, 350860), (106, 271420), (164, 175430), (205, 140344), (212, 135710), (265, 108568), (328, 87715), (331, 86920), (410, 70172), (424, 67855), (530, 54284), (662, 43460), (820, 35086), (1060, 27142), (1324, 21730), (1640, 17543), (1655, 17384), (2120, 13571), (2173, 13240), (2648, 10865), (3310, 8692), (4346, 6620)]