20817864

素因数分解:

$2^3\times 3^3\times {\mathrm{31}}^1\times {\mathrm{3109}}^1$

素因数の和:3155

約数の個数: 64

約数和(自身を含む): 59712000

約数和(自身を除く): 38894136

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 31, 36, 54, 62, 72, 93, 108, 124, 186, 216, 248, 279, 372, 558, 744, 837, 1116, 1674, 2232, 3109, 3348, 6218, 6696, 9327, 12436, 18654, 24872, 27981, 37308, 55962, 74616, 83943, 96379, 111924, 167886, 192758, 223848, 289137, 335772, 385516, 578274, 671544, 771032, 867411, 1156548, 1734822, 2313096, 2602233, 3469644, 5204466, 6939288, 10408932, 20817864]

約数ペア:

[(1, 20817864), (2, 10408932), (3, 6939288), (4, 5204466), (6, 3469644), (8, 2602233), (9, 2313096), (12, 1734822), (18, 1156548), (24, 867411), (27, 771032), (31, 671544), (36, 578274), (54, 385516), (62, 335772), (72, 289137), (93, 223848), (108, 192758), (124, 167886), (186, 111924), (216, 96379), (248, 83943), (279, 74616), (372, 55962), (558, 37308), (744, 27981), (837, 24872), (1116, 18654), (1674, 12436), (2232, 9327), (3109, 6696), (3348, 6218)]