639423930

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{281}}^1\times {\mathrm{751}}^1$

素因数の和:1143

約数の個数: 64

約数和(自身を含む): 1557398016

約数和(自身を除く): 917974086

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 101, 202, 281, 303, 505, 562, 606, 751, 843, 1010, 1405, 1502, 1515, 1686, 2253, 2810, 3030, 3755, 4215, 4506, 7510, 8430, 11265, 22530, 28381, 56762, 75851, 85143, 141905, 151702, 170286, 211031, 227553, 283810, 379255, 422062, 425715, 455106, 633093, 758510, 851430, 1055155, 1137765, 1266186, 2110310, 2275530, 3165465, 6330930, 21314131, 42628262, 63942393, 106570655, 127884786, 213141310, 319711965, 639423930]

約数ペア:

[(1, 639423930), (2, 319711965), (3, 213141310), (5, 127884786), (6, 106570655), (10, 63942393), (15, 42628262), (30, 21314131), (101, 6330930), (202, 3165465), (281, 2275530), (303, 2110310), (505, 1266186), (562, 1137765), (606, 1055155), (751, 851430), (843, 758510), (1010, 633093), (1405, 455106), (1502, 425715), (1515, 422062), (1686, 379255), (2253, 283810), (2810, 227553), (3030, 211031), (3755, 170286), (4215, 151702), (4506, 141905), (7510, 85143), (8430, 75851), (11265, 56762), (22530, 28381)]