15518915

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 20908800

約数和(自身を除く): 5389885

約数列:

[1, 5, 19, 29, 43, 95, 131, 145, 215, 551, 655, 817, 1247, 2489, 2755, 3799, 4085, 5633, 6235, 12445, 18995, 23693, 28165, 72181, 107027, 118465, 163357, 360905, 535135, 816785, 3103783, 15518915]

約数ペア:

[(1, 15518915), (5, 3103783), (19, 816785), (29, 535135), (43, 360905), (95, 163357), (131, 118465), (145, 107027), (215, 72181), (551, 28165), (655, 23693), (817, 18995), (1247, 12445), (2489, 6235), (2755, 5633), (3799, 4085)]