15721995

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:459

約数の個数: 32

約数和(自身を含む): 26496000

約数和(自身を除く): 10774005

約数列:

[1, 3, 5, 15, 23, 69, 115, 199, 229, 345, 597, 687, 995, 1145, 2985, 3435, 4577, 5267, 13731, 15801, 22885, 26335, 45571, 68655, 79005, 136713, 227855, 683565, 1048133, 3144399, 5240665, 15721995]

約数ペア:

[(1, 15721995), (3, 5240665), (5, 3144399), (15, 1048133), (23, 683565), (69, 227855), (115, 136713), (199, 79005), (229, 68655), (345, 45571), (597, 26335), (687, 22885), (995, 15801), (1145, 13731), (2985, 5267), (3435, 4577)]