2008742480

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{317839}}^1$

素因数の和:317931

約数の個数: 40

約数和(自身を含む): 4729459200

約数和(自身を除く): 2720716720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 317839, 635678, 1271356, 1589195, 2542712, 3178390, 5085424, 6356780, 12713560, 25109281, 25427120, 50218562, 100437124, 125546405, 200874248, 251092810, 401748496, 502185620, 1004371240, 2008742480]

約数ペア:

[(1, 2008742480), (2, 1004371240), (4, 502185620), (5, 401748496), (8, 251092810), (10, 200874248), (16, 125546405), (20, 100437124), (40, 50218562), (79, 25427120), (80, 25109281), (158, 12713560), (316, 6356780), (395, 5085424), (632, 3178390), (790, 2542712), (1264, 1589195), (1580, 1271356), (3160, 635678), (6320, 317839)]