21086680

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6673}}^1$

素因数の和:6763

約数の個数: 32

約数和(自身を含む): 48052800

約数和(自身を除く): 26966120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 6673, 13346, 26692, 33365, 53384, 66730, 133460, 266920, 527167, 1054334, 2108668, 2635835, 4217336, 5271670, 10543340, 21086680]

約数ペア:

[(1, 21086680), (2, 10543340), (4, 5271670), (5, 4217336), (8, 2635835), (10, 2108668), (20, 1054334), (40, 527167), (79, 266920), (158, 133460), (316, 66730), (395, 53384), (632, 33365), (790, 26692), (1580, 13346), (3160, 6673)]