20512690648

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{791629}}^1$

素因数の和:791755

約数の個数: 32

約数和(自身を含む): 39898152000

約数和(自身を除く): 19385461352

約数列:

[1, 2, 4, 8, 41, 79, 82, 158, 164, 316, 328, 632, 3239, 6478, 12956, 25912, 791629, 1583258, 3166516, 6333032, 32456789, 62538691, 64913578, 125077382, 129827156, 250154764, 259654312, 500309528, 2564086331, 5128172662, 10256345324, 20512690648]

約数ペア:

[(1, 20512690648), (2, 10256345324), (4, 5128172662), (8, 2564086331), (41, 500309528), (79, 259654312), (82, 250154764), (158, 129827156), (164, 125077382), (316, 64913578), (328, 62538691), (632, 32456789), (3239, 6333032), (6478, 3166516), (12956, 1583258), (25912, 791629)]