21440797

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{4357}}^1$

素因数の和:4420

約数の個数: 16

約数和(自身を含む): 26496640

約数和(自身を除く): 5055843

約数列:

[1, 7, 19, 37, 133, 259, 703, 4357, 4921, 30499, 82783, 161209, 579481, 1128463, 3062971, 21440797]

約数ペア:

[(1, 21440797), (7, 3062971), (19, 1128463), (37, 579481), (133, 161209), (259, 82783), (703, 30499), (4357, 4921)]