440908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:217

約数の個数: 24

約数和(自身を含む): 850640

約数和(自身を除く): 409732

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 139, 244, 278, 556, 793, 1586, 1807, 3172, 3614, 7228, 8479, 16958, 33916, 110227, 220454, 440908]

約数ペア:

[(1, 440908), (2, 220454), (4, 110227), (13, 33916), (26, 16958), (52, 8479), (61, 7228), (122, 3614), (139, 3172), (244, 1807), (278, 1586), (556, 793)]