21616408

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 45150840

約数和(自身を除く): 23534432

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 137, 163, 242, 274, 326, 484, 548, 652, 968, 1096, 1304, 1507, 1793, 3014, 3586, 6028, 7172, 12056, 14344, 16577, 19723, 22331, 33154, 39446, 44662, 66308, 78892, 89324, 132616, 157784, 178648, 245641, 491282, 982564, 1965128, 2702051, 5404102, 10808204, 21616408]

約数ペア:

[(1, 21616408), (2, 10808204), (4, 5404102), (8, 2702051), (11, 1965128), (22, 982564), (44, 491282), (88, 245641), (121, 178648), (137, 157784), (163, 132616), (242, 89324), (274, 78892), (326, 66308), (484, 44662), (548, 39446), (652, 33154), (968, 22331), (1096, 19723), (1304, 16577), (1507, 14344), (1793, 12056), (3014, 7172), (3586, 6028)]