21135933

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 38054016

約数和(自身を除く): 16918083

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 131, 197, 273, 393, 591, 819, 917, 1179, 1379, 1703, 1773, 2561, 2751, 4137, 5109, 7683, 8253, 11921, 12411, 15327, 17927, 23049, 25807, 35763, 53781, 77421, 107289, 161343, 180649, 232263, 335491, 541947, 1006473, 1625841, 2348437, 3019419, 7045311, 21135933]

約数ペア:

[(1, 21135933), (3, 7045311), (7, 3019419), (9, 2348437), (13, 1625841), (21, 1006473), (39, 541947), (63, 335491), (91, 232263), (117, 180649), (131, 161343), (197, 107289), (273, 77421), (393, 53781), (591, 35763), (819, 25807), (917, 23049), (1179, 17927), (1379, 15327), (1703, 12411), (1773, 11921), (2561, 8253), (2751, 7683), (4137, 5109)]