20145321320

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1583}}^1\times {\mathrm{4481}}^1$

素因数の和:6146

約数の個数: 64

約数和(自身を含む): 46004682240

約数和(自身を除く): 25859360920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 1583, 2840, 3166, 4481, 6332, 7915, 8962, 12664, 15830, 17924, 22405, 31660, 35848, 44810, 63320, 89620, 112393, 179240, 224786, 318151, 449572, 561965, 636302, 899144, 1123930, 1272604, 1590755, 2247860, 2545208, 3181510, 4495720, 6363020, 7093423, 12726040, 14186846, 28373692, 35467115, 56747384, 70934230, 141868460, 283736920, 503633033, 1007266066, 2014532132, 2518165165, 4029064264, 5036330330, 10072660660, 20145321320]

約数ペア:

[(1, 20145321320), (2, 10072660660), (4, 5036330330), (5, 4029064264), (8, 2518165165), (10, 2014532132), (20, 1007266066), (40, 503633033), (71, 283736920), (142, 141868460), (284, 70934230), (355, 56747384), (568, 35467115), (710, 28373692), (1420, 14186846), (1583, 12726040), (2840, 7093423), (3166, 6363020), (4481, 4495720), (6332, 3181510), (7915, 2545208), (8962, 2247860), (12664, 1590755), (15830, 1272604), (17924, 1123930), (22405, 899144), (31660, 636302), (35848, 561965), (44810, 449572), (63320, 318151), (89620, 224786), (112393, 179240)]