21375738

素因数分解:

$2^1\times 3^{10}\times {\mathrm{181}}^1$

素因数の和:213

約数の個数: 44

約数和(自身を含む): 48360858

約数和(自身を除く): 26985120

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 181, 243, 362, 486, 543, 729, 1086, 1458, 1629, 2187, 3258, 4374, 4887, 6561, 9774, 13122, 14661, 19683, 29322, 39366, 43983, 59049, 87966, 118098, 131949, 263898, 395847, 791694, 1187541, 2375082, 3562623, 7125246, 10687869, 21375738]

約数ペア:

[(1, 21375738), (2, 10687869), (3, 7125246), (6, 3562623), (9, 2375082), (18, 1187541), (27, 791694), (54, 395847), (81, 263898), (162, 131949), (181, 118098), (243, 87966), (362, 59049), (486, 43983), (543, 39366), (729, 29322), (1086, 19683), (1458, 14661), (1629, 13122), (2187, 9774), (3258, 6561), (4374, 4887)]