30678040

素因数分解:

$2^3\times 5^1\times {\mathrm{239}}^1\times {\mathrm{3209}}^1$

素因数の和:3459

約数の個数: 32

約数和(自身を含む): 69336000

約数和(自身を除く): 38657960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 239, 478, 956, 1195, 1912, 2390, 3209, 4780, 6418, 9560, 12836, 16045, 25672, 32090, 64180, 128360, 766951, 1533902, 3067804, 3834755, 6135608, 7669510, 15339020, 30678040]

約数ペア:

[(1, 30678040), (2, 15339020), (4, 7669510), (5, 6135608), (8, 3834755), (10, 3067804), (20, 1533902), (40, 766951), (239, 128360), (478, 64180), (956, 32090), (1195, 25672), (1912, 16045), (2390, 12836), (3209, 9560), (4780, 6418)]