20426910

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{461}}^1$

素因数の和:689

約数の個数: 64

約数和(自身を含む): 56415744

約数和(自身を除く): 35988834

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 211, 422, 461, 633, 922, 1055, 1266, 1383, 1477, 2110, 2305, 2766, 2954, 3165, 3227, 4431, 4610, 6330, 6454, 6915, 7385, 8862, 9681, 13830, 14770, 16135, 19362, 22155, 32270, 44310, 48405, 96810, 97271, 194542, 291813, 486355, 583626, 680897, 972710, 1361794, 1459065, 2042691, 2918130, 3404485, 4085382, 6808970, 10213455, 20426910]

約数ペア:

[(1, 20426910), (2, 10213455), (3, 6808970), (5, 4085382), (6, 3404485), (7, 2918130), (10, 2042691), (14, 1459065), (15, 1361794), (21, 972710), (30, 680897), (35, 583626), (42, 486355), (70, 291813), (105, 194542), (210, 97271), (211, 96810), (422, 48405), (461, 44310), (633, 32270), (922, 22155), (1055, 19362), (1266, 16135), (1383, 14770), (1477, 13830), (2110, 9681), (2305, 8862), (2766, 7385), (2954, 6915), (3165, 6454), (3227, 6330), (4431, 4610)]