28077620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{353}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 61196688

約数和(自身を除く): 33119068

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 97, 164, 194, 205, 353, 388, 410, 485, 706, 820, 970, 1412, 1765, 1940, 3530, 3977, 7060, 7954, 14473, 15908, 19885, 28946, 34241, 39770, 57892, 68482, 72365, 79540, 136964, 144730, 171205, 289460, 342410, 684820, 1403881, 2807762, 5615524, 7019405, 14038810, 28077620]

約数ペア:

[(1, 28077620), (2, 14038810), (4, 7019405), (5, 5615524), (10, 2807762), (20, 1403881), (41, 684820), (82, 342410), (97, 289460), (164, 171205), (194, 144730), (205, 136964), (353, 79540), (388, 72365), (410, 68482), (485, 57892), (706, 39770), (820, 34241), (970, 28946), (1412, 19885), (1765, 15908), (1940, 14473), (3530, 7954), (3977, 7060)]