290675240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{421}}^2$

素因数の和:894

約数の個数: 48

約数和(自身を含む): 671566140

約数和(自身を除く): 380890900

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 421, 820, 842, 1640, 1684, 2105, 3368, 4210, 8420, 16840, 17261, 34522, 69044, 86305, 138088, 172610, 177241, 345220, 354482, 690440, 708964, 886205, 1417928, 1772410, 3544820, 7089640, 7266881, 14533762, 29067524, 36334405, 58135048, 72668810, 145337620, 290675240]

約数ペア:

[(1, 290675240), (2, 145337620), (4, 72668810), (5, 58135048), (8, 36334405), (10, 29067524), (20, 14533762), (40, 7266881), (41, 7089640), (82, 3544820), (164, 1772410), (205, 1417928), (328, 886205), (410, 708964), (421, 690440), (820, 354482), (842, 345220), (1640, 177241), (1684, 172610), (2105, 138088), (3368, 86305), (4210, 69044), (8420, 34522), (16840, 17261)]