21498655

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{2617}}^1$

素因数の和:2706

約数の個数: 16

約数和(自身を含む): 27143424

約数和(自身を除く): 5644769

約数列:

[1, 5, 31, 53, 155, 265, 1643, 2617, 8215, 13085, 81127, 138701, 405635, 693505, 4299731, 21498655]

約数ペア:

[(1, 21498655), (5, 4299731), (31, 693505), (53, 405635), (155, 138701), (265, 81127), (1643, 13085), (2617, 8215)]