208498520

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{58567}}^1$

素因数の和:58667

約数の個数: 32

約数和(自身を含む): 474400800

約数和(自身を除く): 265902280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 58567, 117134, 234268, 292835, 468536, 585670, 1171340, 2342680, 5212463, 10424926, 20849852, 26062315, 41699704, 52124630, 104249260, 208498520]

約数ペア:

[(1, 208498520), (2, 104249260), (4, 52124630), (5, 41699704), (8, 26062315), (10, 20849852), (20, 10424926), (40, 5212463), (89, 2342680), (178, 1171340), (356, 585670), (445, 468536), (712, 292835), (890, 234268), (1780, 117134), (3560, 58567)]