20784497640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1246073}}^1$

素因数の和:1246226

約数の個数: 64

約数和(自身を含む): 62802129600

約数和(自身を除く): 42017631960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 139, 278, 417, 556, 695, 834, 1112, 1390, 1668, 2085, 2780, 3336, 4170, 5560, 8340, 16680, 1246073, 2492146, 3738219, 4984292, 6230365, 7476438, 9968584, 12460730, 14952876, 18691095, 24921460, 29905752, 37382190, 49842920, 74764380, 149528760, 173204147, 346408294, 519612441, 692816588, 866020735, 1039224882, 1385633176, 1732041470, 2078449764, 2598062205, 3464082940, 4156899528, 5196124410, 6928165880, 10392248820, 20784497640]

約数ペア:

[(1, 20784497640), (2, 10392248820), (3, 6928165880), (4, 5196124410), (5, 4156899528), (6, 3464082940), (8, 2598062205), (10, 2078449764), (12, 1732041470), (15, 1385633176), (20, 1039224882), (24, 866020735), (30, 692816588), (40, 519612441), (60, 346408294), (120, 173204147), (139, 149528760), (278, 74764380), (417, 49842920), (556, 37382190), (695, 29905752), (834, 24921460), (1112, 18691095), (1390, 14952876), (1668, 12460730), (2085, 9968584), (2780, 7476438), (3336, 6230365), (4170, 4984292), (5560, 3738219), (8340, 2492146), (16680, 1246073)]