20714680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{167}}^1\times {\mathrm{443}}^1$

素因数の和:628

約数の個数: 64

約数和(自身を含む): 53706240

約数和(自身を除く): 32991560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 167, 280, 334, 443, 668, 835, 886, 1169, 1336, 1670, 1772, 2215, 2338, 3101, 3340, 3544, 4430, 4676, 5845, 6202, 6680, 8860, 9352, 11690, 12404, 15505, 17720, 23380, 24808, 31010, 46760, 62020, 73981, 124040, 147962, 295924, 369905, 517867, 591848, 739810, 1035734, 1479620, 2071468, 2589335, 2959240, 4142936, 5178670, 10357340, 20714680]

約数ペア:

[(1, 20714680), (2, 10357340), (4, 5178670), (5, 4142936), (7, 2959240), (8, 2589335), (10, 2071468), (14, 1479620), (20, 1035734), (28, 739810), (35, 591848), (40, 517867), (56, 369905), (70, 295924), (140, 147962), (167, 124040), (280, 73981), (334, 62020), (443, 46760), (668, 31010), (835, 24808), (886, 23380), (1169, 17720), (1336, 15505), (1670, 12404), (1772, 11690), (2215, 9352), (2338, 8860), (3101, 6680), (3340, 6202), (3544, 5845), (4430, 4676)]