28452760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{331}}^1$

素因数の和:656

約数の個数: 64

約数和(自身を含む): 73624320

約数和(自身を除く): 45171560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 307, 331, 614, 662, 1228, 1324, 1535, 1655, 2149, 2317, 2456, 2648, 3070, 3310, 4298, 4634, 6140, 6620, 8596, 9268, 10745, 11585, 12280, 13240, 17192, 18536, 21490, 23170, 42980, 46340, 85960, 92680, 101617, 203234, 406468, 508085, 711319, 812936, 1016170, 1422638, 2032340, 2845276, 3556595, 4064680, 5690552, 7113190, 14226380, 28452760]

約数ペア:

[(1, 28452760), (2, 14226380), (4, 7113190), (5, 5690552), (7, 4064680), (8, 3556595), (10, 2845276), (14, 2032340), (20, 1422638), (28, 1016170), (35, 812936), (40, 711319), (56, 508085), (70, 406468), (140, 203234), (280, 101617), (307, 92680), (331, 85960), (614, 46340), (662, 42980), (1228, 23170), (1324, 21490), (1535, 18536), (1655, 17192), (2149, 13240), (2317, 12280), (2456, 11585), (2648, 10745), (3070, 9268), (3310, 8596), (4298, 6620), (4634, 6140)]