21964397

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{41}}^1$

素因数の和:126

約数の個数: 36

約数和(自身を含む): 29192436

約数和(自身を除く): 7228039

約数列:

[1, 7, 13, 29, 41, 49, 91, 203, 287, 377, 533, 637, 841, 1189, 1421, 2009, 2639, 3731, 5887, 8323, 10933, 15457, 18473, 26117, 34481, 41209, 58261, 76531, 108199, 241367, 448253, 535717, 757393, 1689569, 3137771, 21964397]

約数ペア:

[(1, 21964397), (7, 3137771), (13, 1689569), (29, 757393), (41, 535717), (49, 448253), (91, 241367), (203, 108199), (287, 76531), (377, 58261), (533, 41209), (637, 34481), (841, 26117), (1189, 18473), (1421, 15457), (2009, 10933), (2639, 8323), (3731, 5887)]