207978220

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1\times {\mathrm{487}}^1$

素因数の和:790

約数の個数: 48

約数和(自身を含む): 443697408

約数和(自身を除く): 235719188

約数列:

[1, 2, 4, 5, 10, 20, 131, 163, 262, 326, 487, 524, 652, 655, 815, 974, 1310, 1630, 1948, 2435, 2620, 3260, 4870, 9740, 21353, 42706, 63797, 79381, 85412, 106765, 127594, 158762, 213530, 255188, 317524, 318985, 396905, 427060, 637970, 793810, 1275940, 1587620, 10398911, 20797822, 41595644, 51994555, 103989110, 207978220]

約数ペア:

[(1, 207978220), (2, 103989110), (4, 51994555), (5, 41595644), (10, 20797822), (20, 10398911), (131, 1587620), (163, 1275940), (262, 793810), (326, 637970), (487, 427060), (524, 396905), (652, 318985), (655, 317524), (815, 255188), (974, 213530), (1310, 158762), (1630, 127594), (1948, 106765), (2435, 85412), (2620, 79381), (3260, 63797), (4870, 42706), (9740, 21353)]