9961980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{23719}}^1$

素因数の和:23738

約数の個数: 48

約数和(自身を含む): 31879680

約数和(自身を除く): 21917700

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 23719, 47438, 71157, 94876, 118595, 142314, 166033, 237190, 284628, 332066, 355785, 474380, 498099, 664132, 711570, 830165, 996198, 1423140, 1660330, 1992396, 2490495, 3320660, 4980990, 9961980]

約数ペア:

[(1, 9961980), (2, 4980990), (3, 3320660), (4, 2490495), (5, 1992396), (6, 1660330), (7, 1423140), (10, 996198), (12, 830165), (14, 711570), (15, 664132), (20, 498099), (21, 474380), (28, 355785), (30, 332066), (35, 284628), (42, 237190), (60, 166033), (70, 142314), (84, 118595), (105, 94876), (140, 71157), (210, 47438), (420, 23719)]