128398740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{2139979}}^1$

素因数の和:2139991

約数の個数: 24

約数和(自身を含む): 359516640

約数和(自身を除く): 231117900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 2139979, 4279958, 6419937, 8559916, 10699895, 12839874, 21399790, 25679748, 32099685, 42799580, 64199370, 128398740]

約数ペア:

[(1, 128398740), (2, 64199370), (3, 42799580), (4, 32099685), (5, 25679748), (6, 21399790), (10, 12839874), (12, 10699895), (15, 8559916), (20, 6419937), (30, 4279958), (60, 2139979)]