21007545

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8287}}^1$

素因数の和:8321

約数の個数: 24

約数和(自身を含む): 36400896

約数和(自身を除く): 15393351

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 507, 845, 2535, 8287, 24861, 41435, 107731, 124305, 323193, 538655, 1400503, 1615965, 4201509, 7002515, 21007545]

約数ペア:

[(1, 21007545), (3, 7002515), (5, 4201509), (13, 1615965), (15, 1400503), (39, 538655), (65, 323193), (169, 124305), (195, 107731), (507, 41435), (845, 24861), (2535, 8287)]