20002104580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{205487}}^1$

素因数の和:205684

約数の個数: 48

約数和(自身を含む): 43635787776

約数和(自身を除く): 23633683196

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 157, 310, 314, 620, 628, 785, 1570, 3140, 4867, 9734, 19468, 24335, 48670, 97340, 205487, 410974, 821948, 1027435, 2054870, 4109740, 6370097, 12740194, 25480388, 31850485, 32261459, 63700970, 64522918, 127401940, 129045836, 161307295, 322614590, 645229180, 1000105229, 2000210458, 4000420916, 5000526145, 10001052290, 20002104580]

約数ペア:

[(1, 20002104580), (2, 10001052290), (4, 5000526145), (5, 4000420916), (10, 2000210458), (20, 1000105229), (31, 645229180), (62, 322614590), (124, 161307295), (155, 129045836), (157, 127401940), (310, 64522918), (314, 63700970), (620, 32261459), (628, 31850485), (785, 25480388), (1570, 12740194), (3140, 6370097), (4867, 4109740), (9734, 2054870), (19468, 1027435), (24335, 821948), (48670, 410974), (97340, 205487)]