245721281

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{421}}^1$

素因数の和:609

約数の個数: 32

約数和(自身を含む): 297763200

約数和(自身を除く): 52041919

約数列:

[1, 13, 17, 19, 139, 221, 247, 323, 421, 1807, 2363, 2641, 4199, 5473, 7157, 7999, 30719, 34333, 44897, 58519, 93041, 103987, 135983, 583661, 760747, 994823, 1111861, 1767779, 12932699, 14454193, 18901637, 245721281]

約数ペア:

[(1, 245721281), (13, 18901637), (17, 14454193), (19, 12932699), (139, 1767779), (221, 1111861), (247, 994823), (323, 760747), (421, 583661), (1807, 135983), (2363, 103987), (2641, 93041), (4199, 58519), (5473, 44897), (7157, 34333), (7999, 30719)]