20349621880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{113381}}^1$

素因数の和:114040

約数の個数: 64

約数和(自身を含む): 52409695680

約数和(自身を除く): 32060073800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 641, 1282, 2564, 3205, 4487, 5128, 6410, 8974, 12820, 17948, 22435, 25640, 35896, 44870, 89740, 113381, 179480, 226762, 453524, 566905, 793667, 907048, 1133810, 1587334, 2267620, 3174668, 3968335, 4535240, 6349336, 7936670, 15873340, 31746680, 72677221, 145354442, 290708884, 363386105, 508740547, 581417768, 726772210, 1017481094, 1453544420, 2034962188, 2543702735, 2907088840, 4069924376, 5087405470, 10174810940, 20349621880]

約数ペア:

[(1, 20349621880), (2, 10174810940), (4, 5087405470), (5, 4069924376), (7, 2907088840), (8, 2543702735), (10, 2034962188), (14, 1453544420), (20, 1017481094), (28, 726772210), (35, 581417768), (40, 508740547), (56, 363386105), (70, 290708884), (140, 145354442), (280, 72677221), (641, 31746680), (1282, 15873340), (2564, 7936670), (3205, 6349336), (4487, 4535240), (5128, 3968335), (6410, 3174668), (8974, 2267620), (12820, 1587334), (17948, 1133810), (22435, 907048), (25640, 793667), (35896, 566905), (44870, 453524), (89740, 226762), (113381, 179480)]