9983960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{197}}^1$

素因数の和:396

約数の個数: 64

約数和(自身を含む): 25945920

約数和(自身を除く): 15961960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 181, 197, 280, 362, 394, 724, 788, 905, 985, 1267, 1379, 1448, 1576, 1810, 1970, 2534, 2758, 3620, 3940, 5068, 5516, 6335, 6895, 7240, 7880, 10136, 11032, 12670, 13790, 25340, 27580, 35657, 50680, 55160, 71314, 142628, 178285, 249599, 285256, 356570, 499198, 713140, 998396, 1247995, 1426280, 1996792, 2495990, 4991980, 9983960]

約数ペア:

[(1, 9983960), (2, 4991980), (4, 2495990), (5, 1996792), (7, 1426280), (8, 1247995), (10, 998396), (14, 713140), (20, 499198), (28, 356570), (35, 285256), (40, 249599), (56, 178285), (70, 142628), (140, 71314), (181, 55160), (197, 50680), (280, 35657), (362, 27580), (394, 25340), (724, 13790), (788, 12670), (905, 11032), (985, 10136), (1267, 7880), (1379, 7240), (1448, 6895), (1576, 6335), (1810, 5516), (1970, 5068), (2534, 3940), (2758, 3620)]