291245960

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{177589}}^1$

素因数の和:177641

約数の個数: 32

約数和(自身を含む): 671290200

約数和(自身を除く): 380044240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 177589, 355178, 710356, 887945, 1420712, 1775890, 3551780, 7103560, 7281149, 14562298, 29124596, 36405745, 58249192, 72811490, 145622980, 291245960]

約数ペア:

[(1, 291245960), (2, 145622980), (4, 72811490), (5, 58249192), (8, 36405745), (10, 29124596), (20, 14562298), (40, 7281149), (41, 7103560), (82, 3551780), (164, 1775890), (205, 1420712), (328, 887945), (410, 710356), (820, 355178), (1640, 177589)]