71813960

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43789}}^1$

素因数の和:43841

約数の個数: 32

約数和(自身を含む): 165526200

約数和(自身を除く): 93712240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 43789, 87578, 175156, 218945, 350312, 437890, 875780, 1751560, 1795349, 3590698, 7181396, 8976745, 14362792, 17953490, 35906980, 71813960]

約数ペア:

[(1, 71813960), (2, 35906980), (4, 17953490), (5, 14362792), (8, 8976745), (10, 7181396), (20, 3590698), (40, 1795349), (41, 1751560), (82, 875780), (164, 437890), (205, 350312), (328, 218945), (410, 175156), (820, 87578), (1640, 43789)]