39906940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{1187}}^1$

素因数の和:1278

約数の個数: 36

約数和(自身を含む): 85970808

約数和(自身を除く): 46063868

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 1187, 1681, 2374, 3362, 4748, 5935, 6724, 8405, 11870, 16810, 23740, 33620, 48667, 97334, 194668, 243335, 486670, 973340, 1995347, 3990694, 7981388, 9976735, 19953470, 39906940]

約数ペア:

[(1, 39906940), (2, 19953470), (4, 9976735), (5, 7981388), (10, 3990694), (20, 1995347), (41, 973340), (82, 486670), (164, 243335), (205, 194668), (410, 97334), (820, 48667), (1187, 33620), (1681, 23740), (2374, 16810), (3362, 11870), (4748, 8405), (5935, 6724)]