1640371880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{2161}}^1\times {\mathrm{2711}}^1$

素因数の和:4890

約数の個数: 64

約数和(自身を含む): 4221607680

約数和(自身を除く): 2581235800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 2161, 2711, 4322, 5422, 8644, 10805, 10844, 13555, 15127, 17288, 18977, 21610, 21688, 27110, 30254, 37954, 43220, 54220, 60508, 75635, 75908, 86440, 94885, 108440, 121016, 151270, 151816, 189770, 302540, 379540, 605080, 759080, 5858471, 11716942, 23433884, 29292355, 41009297, 46867768, 58584710, 82018594, 117169420, 164037188, 205046485, 234338840, 328074376, 410092970, 820185940, 1640371880]

約数ペア:

[(1, 1640371880), (2, 820185940), (4, 410092970), (5, 328074376), (7, 234338840), (8, 205046485), (10, 164037188), (14, 117169420), (20, 82018594), (28, 58584710), (35, 46867768), (40, 41009297), (56, 29292355), (70, 23433884), (140, 11716942), (280, 5858471), (2161, 759080), (2711, 605080), (4322, 379540), (5422, 302540), (8644, 189770), (10805, 151816), (10844, 151270), (13555, 121016), (15127, 108440), (17288, 94885), (18977, 86440), (21610, 75908), (21688, 75635), (27110, 60508), (30254, 54220), (37954, 43220)]