7209980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{401}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 16208640

約数和(自身を除く): 8998660

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 116, 124, 145, 155, 290, 310, 401, 580, 620, 802, 899, 1604, 1798, 2005, 3596, 4010, 4495, 8020, 8990, 11629, 12431, 17980, 23258, 24862, 46516, 49724, 58145, 62155, 116290, 124310, 232580, 248620, 360499, 720998, 1441996, 1802495, 3604990, 7209980]

約数ペア:

[(1, 7209980), (2, 3604990), (4, 1802495), (5, 1441996), (10, 720998), (20, 360499), (29, 248620), (31, 232580), (58, 124310), (62, 116290), (116, 62155), (124, 58145), (145, 49724), (155, 46516), (290, 24862), (310, 23258), (401, 17980), (580, 12431), (620, 11629), (802, 8990), (899, 8020), (1604, 4495), (1798, 4010), (2005, 3596)]