20409420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{17903}}^1$

素因数の和:17934

約数の個数: 48

約数和(自身を含む): 60157440

約数和(自身を除く): 39748020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 17903, 35806, 53709, 71612, 89515, 107418, 179030, 214836, 268545, 340157, 358060, 537090, 680314, 1020471, 1074180, 1360628, 1700785, 2040942, 3401570, 4081884, 5102355, 6803140, 10204710, 20409420]

約数ペア:

[(1, 20409420), (2, 10204710), (3, 6803140), (4, 5102355), (5, 4081884), (6, 3401570), (10, 2040942), (12, 1700785), (15, 1360628), (19, 1074180), (20, 1020471), (30, 680314), (38, 537090), (57, 358060), (60, 340157), (76, 268545), (95, 214836), (114, 179030), (190, 107418), (228, 89515), (285, 71612), (380, 53709), (570, 35806), (1140, 17903)]