399816

素因数分解:

$2^3\times 3^4\times {\mathrm{617}}^1$

素因数の和:635

約数の個数: 40

約数和(自身を含む): 1121670

約数和(自身を除く): 721854

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 617, 648, 1234, 1851, 2468, 3702, 4936, 5553, 7404, 11106, 14808, 16659, 22212, 33318, 44424, 49977, 66636, 99954, 133272, 199908, 399816]

約数ペア:

[(1, 399816), (2, 199908), (3, 133272), (4, 99954), (6, 66636), (8, 49977), (9, 44424), (12, 33318), (18, 22212), (24, 16659), (27, 14808), (36, 11106), (54, 7404), (72, 5553), (81, 4936), (108, 3702), (162, 2468), (216, 1851), (324, 1234), (617, 648)]