634240

素因数分解:

$2^7\times 5^1\times {\mathrm{991}}^1$

素因数の和:1010

約数の個数: 32

約数和(自身を含む): 1517760

約数和(自身を除く): 883520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 991, 1982, 3964, 4955, 7928, 9910, 15856, 19820, 31712, 39640, 63424, 79280, 126848, 158560, 317120, 634240]

約数ペア:

[(1, 634240), (2, 317120), (4, 158560), (5, 126848), (8, 79280), (10, 63424), (16, 39640), (20, 31712), (32, 19820), (40, 15856), (64, 9910), (80, 7928), (128, 4955), (160, 3964), (320, 1982), (640, 991)]