839401775

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{991}}^1\times {\mathrm{1993}}^1$

素因数の和:3011

約数の個数: 24

約数和(自身を含む): 1103750784

約数和(自身を除く): 264349009

約数列:

[1, 5, 17, 25, 85, 425, 991, 1993, 4955, 9965, 16847, 24775, 33881, 49825, 84235, 169405, 421175, 847025, 1975063, 9875315, 33576071, 49376575, 167880355, 839401775]

約数ペア:

[(1, 839401775), (5, 167880355), (17, 49376575), (25, 33576071), (85, 9875315), (425, 1975063), (991, 847025), (1993, 421175), (4955, 169405), (9965, 84235), (16847, 49825), (24775, 33881)]