20257356

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{691}}^1$

素因数の和:1054

約数の個数: 48

約数和(自身を含む): 54252800

約数和(自身を除く): 33995444

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 349, 691, 698, 1047, 1382, 1396, 2073, 2094, 2443, 2764, 4146, 4188, 4837, 4886, 7329, 8292, 9674, 9772, 14511, 14658, 19348, 29022, 29316, 58044, 241159, 482318, 723477, 964636, 1446954, 1688113, 2893908, 3376226, 5064339, 6752452, 10128678, 20257356]

約数ペア:

[(1, 20257356), (2, 10128678), (3, 6752452), (4, 5064339), (6, 3376226), (7, 2893908), (12, 1688113), (14, 1446954), (21, 964636), (28, 723477), (42, 482318), (84, 241159), (349, 58044), (691, 29316), (698, 29022), (1047, 19348), (1382, 14658), (1396, 14511), (2073, 9772), (2094, 9674), (2443, 8292), (2764, 7329), (4146, 4886), (4188, 4837)]