28018020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6577}}^1$

素因数の和:6660

約数の個数: 48

約数和(自身を含む): 79567488

約数和(自身を除く): 51549468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 6577, 13154, 19731, 26308, 32885, 39462, 65770, 78924, 98655, 131540, 197310, 394620, 466967, 933934, 1400901, 1867868, 2334835, 2801802, 4669670, 5603604, 7004505, 9339340, 14009010, 28018020]

約数ペア:

[(1, 28018020), (2, 14009010), (3, 9339340), (4, 7004505), (5, 5603604), (6, 4669670), (10, 2801802), (12, 2334835), (15, 1867868), (20, 1400901), (30, 933934), (60, 466967), (71, 394620), (142, 197310), (213, 131540), (284, 98655), (355, 78924), (426, 65770), (710, 39462), (852, 32885), (1065, 26308), (1420, 19731), (2130, 13154), (4260, 6577)]