256710

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:252

約数の個数: 32

約数和(自身を含む): 633600

約数和(自身を除く): 376890

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 199, 215, 258, 398, 430, 597, 645, 995, 1194, 1290, 1990, 2985, 5970, 8557, 17114, 25671, 42785, 51342, 85570, 128355, 256710]

約数ペア:

[(1, 256710), (2, 128355), (3, 85570), (5, 51342), (6, 42785), (10, 25671), (15, 17114), (30, 8557), (43, 5970), (86, 2985), (129, 1990), (199, 1290), (215, 1194), (258, 995), (398, 645), (430, 597)]