163981960

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{99989}}^1$

素因数の和:100041

約数の個数: 32

約数和(自身を含む): 377962200

約数和(自身を除く): 213980240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 99989, 199978, 399956, 499945, 799912, 999890, 1999780, 3999560, 4099549, 8199098, 16398196, 20497745, 32796392, 40995490, 81990980, 163981960]

約数ペア:

[(1, 163981960), (2, 81990980), (4, 40995490), (5, 32796392), (8, 20497745), (10, 16398196), (20, 8199098), (40, 4099549), (41, 3999560), (82, 1999780), (164, 999890), (205, 799912), (328, 499945), (410, 399956), (820, 199978), (1640, 99989)]