31920220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{421}}^1$

素因数の和:670

約数の個数: 48

約数和(自身を含む): 71463168

約数和(自身を除く): 39542948

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 223, 340, 421, 446, 842, 892, 1115, 1684, 2105, 2230, 3791, 4210, 4460, 7157, 7582, 8420, 14314, 15164, 18955, 28628, 35785, 37910, 71570, 75820, 93883, 143140, 187766, 375532, 469415, 938830, 1596011, 1877660, 3192022, 6384044, 7980055, 15960110, 31920220]

約数ペア:

[(1, 31920220), (2, 15960110), (4, 7980055), (5, 6384044), (10, 3192022), (17, 1877660), (20, 1596011), (34, 938830), (68, 469415), (85, 375532), (170, 187766), (223, 143140), (340, 93883), (421, 75820), (446, 71570), (842, 37910), (892, 35785), (1115, 28628), (1684, 18955), (2105, 15164), (2230, 14314), (3791, 8420), (4210, 7582), (4460, 7157)]