138972280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{204371}}^1$

素因数の和:204399

約数の個数: 32

約数和(自身を含む): 331082640

約数和(自身を除く): 192110360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 204371, 408742, 817484, 1021855, 1634968, 2043710, 3474307, 4087420, 6948614, 8174840, 13897228, 17371535, 27794456, 34743070, 69486140, 138972280]

約数ペア:

[(1, 138972280), (2, 69486140), (4, 34743070), (5, 27794456), (8, 17371535), (10, 13897228), (17, 8174840), (20, 6948614), (34, 4087420), (40, 3474307), (68, 2043710), (85, 1634968), (136, 1021855), (170, 817484), (340, 408742), (680, 204371)]