81121564

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{241}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 155034880

約数和(自身を除く): 73913316

約数列:

[1, 2, 4, 19, 38, 43, 76, 86, 103, 172, 206, 241, 412, 482, 817, 964, 1634, 1957, 3268, 3914, 4429, 4579, 7828, 8858, 9158, 10363, 17716, 18316, 20726, 24823, 41452, 49646, 84151, 99292, 168302, 196897, 336604, 393794, 471637, 787588, 943274, 1067389, 1886548, 2134778, 4269556, 20280391, 40560782, 81121564]

約数ペア:

[(1, 81121564), (2, 40560782), (4, 20280391), (19, 4269556), (38, 2134778), (43, 1886548), (76, 1067389), (86, 943274), (103, 787588), (172, 471637), (206, 393794), (241, 336604), (412, 196897), (482, 168302), (817, 99292), (964, 84151), (1634, 49646), (1957, 41452), (3268, 24823), (3914, 20726), (4429, 18316), (4579, 17716), (7828, 10363), (8858, 9158)]