338787920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{103289}}^1$

素因数の和:103343

約数の個数: 40

約数和(自身を含む): 806901480

約数和(自身を除く): 468113560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 103289, 206578, 413156, 516445, 826312, 1032890, 1652624, 2065780, 4131560, 4234849, 8263120, 8469698, 16939396, 21174245, 33878792, 42348490, 67757584, 84696980, 169393960, 338787920]

約数ペア:

[(1, 338787920), (2, 169393960), (4, 84696980), (5, 67757584), (8, 42348490), (10, 33878792), (16, 21174245), (20, 16939396), (40, 8469698), (41, 8263120), (80, 4234849), (82, 4131560), (164, 2065780), (205, 1652624), (328, 1032890), (410, 826312), (656, 516445), (820, 413156), (1640, 206578), (3280, 103289)]