21189195

素因数分解:

$3^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{463}}^1$

素因数の和:593

約数の個数: 40

約数和(自身を含む): 38402496

約数和(自身を除く): 17213301

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 113, 135, 339, 405, 463, 565, 1017, 1389, 1695, 2315, 3051, 4167, 5085, 6945, 9153, 12501, 15255, 20835, 37503, 45765, 52319, 62505, 156957, 187515, 261595, 470871, 784785, 1412613, 2354355, 4237839, 7063065, 21189195]

約数ペア:

[(1, 21189195), (3, 7063065), (5, 4237839), (9, 2354355), (15, 1412613), (27, 784785), (45, 470871), (81, 261595), (113, 187515), (135, 156957), (339, 62505), (405, 52319), (463, 45765), (565, 37503), (1017, 20835), (1389, 15255), (1695, 12501), (2315, 9153), (3051, 6945), (4167, 5085)]