20496945

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{353}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 38741760

約数和(自身を除く): 18244815

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 79, 105, 147, 237, 245, 353, 395, 553, 735, 1059, 1185, 1659, 1765, 2471, 2765, 3871, 5295, 7413, 8295, 11613, 12355, 17297, 19355, 27887, 37065, 51891, 58065, 83661, 86485, 139435, 195209, 259455, 418305, 585627, 976045, 1366463, 2928135, 4099389, 6832315, 20496945]

約数ペア:

[(1, 20496945), (3, 6832315), (5, 4099389), (7, 2928135), (15, 1366463), (21, 976045), (35, 585627), (49, 418305), (79, 259455), (105, 195209), (147, 139435), (237, 86485), (245, 83661), (353, 58065), (395, 51891), (553, 37065), (735, 27887), (1059, 19355), (1185, 17297), (1659, 12355), (1765, 11613), (2471, 8295), (2765, 7413), (3871, 5295)]