21083778

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{401}}^1$

素因数の和:559

約数の個数: 48

約数和(自身を含む): 48162816

約数和(自身を除く): 27079038

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 69, 127, 138, 207, 254, 381, 401, 414, 762, 802, 1143, 1203, 2286, 2406, 2921, 3609, 5842, 7218, 8763, 9223, 17526, 18446, 26289, 27669, 50927, 52578, 55338, 83007, 101854, 152781, 166014, 305562, 458343, 916686, 1171321, 2342642, 3513963, 7027926, 10541889, 21083778]

約数ペア:

[(1, 21083778), (2, 10541889), (3, 7027926), (6, 3513963), (9, 2342642), (18, 1171321), (23, 916686), (46, 458343), (69, 305562), (127, 166014), (138, 152781), (207, 101854), (254, 83007), (381, 55338), (401, 52578), (414, 50927), (762, 27669), (802, 26289), (1143, 18446), (1203, 17526), (2286, 9223), (2406, 8763), (2921, 7218), (3609, 5842)]