138876640

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{123997}}^1$

素因数の和:124019

約数の個数: 48

約数和(自身を含む): 374969952

約数和(自身を除く): 236093312

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 123997, 247994, 495988, 619985, 867979, 991976, 1239970, 1735958, 1983952, 2479940, 3471916, 3967904, 4339895, 4959880, 6943832, 8679790, 9919760, 13887664, 17359580, 19839520, 27775328, 34719160, 69438320, 138876640]

約数ペア:

[(1, 138876640), (2, 69438320), (4, 34719160), (5, 27775328), (7, 19839520), (8, 17359580), (10, 13887664), (14, 9919760), (16, 8679790), (20, 6943832), (28, 4959880), (32, 4339895), (35, 3967904), (40, 3471916), (56, 2479940), (70, 1983952), (80, 1735958), (112, 1239970), (140, 991976), (160, 867979), (224, 619985), (280, 495988), (560, 247994), (1120, 123997)]