212819980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{2801}}^1$

素因数の和:2970

約数の個数: 48

約数和(自身を含む): 466028640

約数和(自身を除く): 253208660

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 131, 145, 262, 290, 524, 580, 655, 1310, 2620, 2801, 3799, 5602, 7598, 11204, 14005, 15196, 18995, 28010, 37990, 56020, 75980, 81229, 162458, 324916, 366931, 406145, 733862, 812290, 1467724, 1624580, 1834655, 3669310, 7338620, 10640999, 21281998, 42563996, 53204995, 106409990, 212819980]

約数ペア:

[(1, 212819980), (2, 106409990), (4, 53204995), (5, 42563996), (10, 21281998), (20, 10640999), (29, 7338620), (58, 3669310), (116, 1834655), (131, 1624580), (145, 1467724), (262, 812290), (290, 733862), (524, 406145), (580, 366931), (655, 324916), (1310, 162458), (2620, 81229), (2801, 75980), (3799, 56020), (5602, 37990), (7598, 28010), (11204, 18995), (14005, 15196)]