78961780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{1249}}^1$

素因数の和:1396

約数の個数: 48

約数和(自身を含む): 173250000

約数和(自身を除く): 94288220

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 109, 116, 145, 218, 290, 436, 545, 580, 1090, 1249, 2180, 2498, 3161, 4996, 6245, 6322, 12490, 12644, 15805, 24980, 31610, 36221, 63220, 72442, 136141, 144884, 181105, 272282, 362210, 544564, 680705, 724420, 1361410, 2722820, 3948089, 7896178, 15792356, 19740445, 39480890, 78961780]

約数ペア:

[(1, 78961780), (2, 39480890), (4, 19740445), (5, 15792356), (10, 7896178), (20, 3948089), (29, 2722820), (58, 1361410), (109, 724420), (116, 680705), (145, 544564), (218, 362210), (290, 272282), (436, 181105), (545, 144884), (580, 136141), (1090, 72442), (1249, 63220), (2180, 36221), (2498, 31610), (3161, 24980), (4996, 15805), (6245, 12644), (6322, 12490)]