20045440

素因数分解:

$2^7\times 5^1\times {\mathrm{31321}}^1$

素因数の和:31340

約数の個数: 32

約数和(自身を含む): 47922660

約数和(自身を除く): 27877220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31321, 62642, 125284, 156605, 250568, 313210, 501136, 626420, 1002272, 1252840, 2004544, 2505680, 4009088, 5011360, 10022720, 20045440]

約数ペア:

[(1, 20045440), (2, 10022720), (4, 5011360), (5, 4009088), (8, 2505680), (10, 2004544), (16, 1252840), (20, 1002272), (32, 626420), (40, 501136), (64, 313210), (80, 250568), (128, 156605), (160, 125284), (320, 62642), (640, 31321)]