20847470

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{691}}^1$

素因数の和:1136

約数の個数: 32

約数和(自身を含む): 43047936

約数和(自身を除く): 22200466

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 431, 691, 862, 1382, 2155, 3017, 3455, 4310, 4837, 6034, 6910, 9674, 15085, 24185, 30170, 48370, 297821, 595642, 1489105, 2084747, 2978210, 4169494, 10423735, 20847470]

約数ペア:

[(1, 20847470), (2, 10423735), (5, 4169494), (7, 2978210), (10, 2084747), (14, 1489105), (35, 595642), (70, 297821), (431, 48370), (691, 30170), (862, 24185), (1382, 15085), (2155, 9674), (3017, 6910), (3455, 6034), (4310, 4837)]