21176511

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{1181}}^1$

素因数の和:1366

約数の個数: 16

約数和(自身を含む): 29124480

約数和(自身を除く): 7947969

約数列:

[1, 3, 43, 129, 139, 417, 1181, 3543, 5977, 17931, 50783, 152349, 164159, 492477, 7058837, 21176511]

約数ペア:

[(1, 21176511), (3, 7058837), (43, 492477), (129, 164159), (139, 152349), (417, 50783), (1181, 17931), (3543, 5977)]