18916816

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{691}}^1$

素因数の和:787

約数の個数: 40

約数和(自身を含む): 38613600

約数和(自身を除く): 19696784

約数列:

[1, 2, 4, 8, 16, 29, 58, 59, 116, 118, 232, 236, 464, 472, 691, 944, 1382, 1711, 2764, 3422, 5528, 6844, 11056, 13688, 20039, 27376, 40078, 40769, 80156, 81538, 160312, 163076, 320624, 326152, 652304, 1182301, 2364602, 4729204, 9458408, 18916816]

約数ペア:

[(1, 18916816), (2, 9458408), (4, 4729204), (8, 2364602), (16, 1182301), (29, 652304), (58, 326152), (59, 320624), (116, 163076), (118, 160312), (232, 81538), (236, 80156), (464, 40769), (472, 40078), (691, 27376), (944, 20039), (1382, 13688), (1711, 11056), (2764, 6844), (3422, 5528)]