20731528076

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{87323}}^1$

素因数の和:87534

約数の個数: 48

約数和(自身を含む): 42446449920

約数和(自身を除く): 21714921844

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 139, 244, 278, 427, 556, 854, 973, 1708, 1946, 3892, 8479, 16958, 33916, 59353, 87323, 118706, 174646, 237412, 349292, 611261, 1222522, 2445044, 5326703, 10653406, 12137897, 21306812, 24275794, 37286921, 48551588, 74573842, 84965279, 149147684, 169930558, 339861116, 740411717, 1480823434, 2961646868, 5182882019, 10365764038, 20731528076]

約数ペア:

[(1, 20731528076), (2, 10365764038), (4, 5182882019), (7, 2961646868), (14, 1480823434), (28, 740411717), (61, 339861116), (122, 169930558), (139, 149147684), (244, 84965279), (278, 74573842), (427, 48551588), (556, 37286921), (854, 24275794), (973, 21306812), (1708, 12137897), (1946, 10653406), (3892, 5326703), (8479, 2445044), (16958, 1222522), (33916, 611261), (59353, 349292), (87323, 237412), (118706, 174646)]