8204980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{569}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 19918080

約数和(自身を除く): 11713100

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 103, 140, 206, 412, 515, 569, 721, 1030, 1138, 1442, 2060, 2276, 2845, 2884, 3605, 3983, 5690, 7210, 7966, 11380, 14420, 15932, 19915, 39830, 58607, 79660, 117214, 234428, 293035, 410249, 586070, 820498, 1172140, 1640996, 2051245, 4102490, 8204980]

約数ペア:

[(1, 8204980), (2, 4102490), (4, 2051245), (5, 1640996), (7, 1172140), (10, 820498), (14, 586070), (20, 410249), (28, 293035), (35, 234428), (70, 117214), (103, 79660), (140, 58607), (206, 39830), (412, 19915), (515, 15932), (569, 14420), (721, 11380), (1030, 7966), (1138, 7210), (1442, 5690), (2060, 3983), (2276, 3605), (2845, 2884)]