289587920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{88289}}^1$

素因数の和:88343

約数の個数: 40

約数和(自身を含む): 689721480

約数和(自身を除く): 400133560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 88289, 176578, 353156, 441445, 706312, 882890, 1412624, 1765780, 3531560, 3619849, 7063120, 7239698, 14479396, 18099245, 28958792, 36198490, 57917584, 72396980, 144793960, 289587920]

約数ペア:

[(1, 289587920), (2, 144793960), (4, 72396980), (5, 57917584), (8, 36198490), (10, 28958792), (16, 18099245), (20, 14479396), (40, 7239698), (41, 7063120), (80, 3619849), (82, 3531560), (164, 1765780), (205, 1412624), (328, 882890), (410, 706312), (656, 441445), (820, 353156), (1640, 176578), (3280, 88289)]