20493759

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:148

約数の個数: 64

約数和(自身を含む): 35094528

約数和(自身を除く): 14600769

約数列:

[1, 3, 11, 13, 23, 31, 33, 39, 67, 69, 93, 143, 201, 253, 299, 341, 403, 429, 713, 737, 759, 871, 897, 1023, 1209, 1541, 2077, 2139, 2211, 2613, 3289, 4433, 4623, 6231, 7843, 9269, 9581, 9867, 13299, 16951, 20033, 22847, 23529, 27001, 27807, 28743, 47771, 50853, 60099, 68541, 81003, 101959, 143313, 220363, 297011, 305877, 525481, 621023, 661089, 891033, 1576443, 1863069, 6831253, 20493759]

約数ペア:

[(1, 20493759), (3, 6831253), (11, 1863069), (13, 1576443), (23, 891033), (31, 661089), (33, 621023), (39, 525481), (67, 305877), (69, 297011), (93, 220363), (143, 143313), (201, 101959), (253, 81003), (299, 68541), (341, 60099), (403, 50853), (429, 47771), (713, 28743), (737, 27807), (759, 27001), (871, 23529), (897, 22847), (1023, 20033), (1209, 16951), (1541, 13299), (2077, 9867), (2139, 9581), (2211, 9269), (2613, 7843), (3289, 6231), (4433, 4623)]