401994

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{971}}^1$

素因数の和:1002

約数の個数: 24

約数和(自身を含む): 909792

約数和(自身を除く): 507798

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 69, 138, 207, 414, 971, 1942, 2913, 5826, 8739, 17478, 22333, 44666, 66999, 133998, 200997, 401994]

約数ペア:

[(1, 401994), (2, 200997), (3, 133998), (6, 66999), (9, 44666), (18, 22333), (23, 17478), (46, 8739), (69, 5826), (138, 2913), (207, 1942), (414, 971)]