649037440

素因数分解:

$2^7\times 5^1\times {\mathrm{1014121}}^1$

素因数の和:1014140

約数の個数: 32

約数和(自身を含む): 1551606660

約数和(自身を除く): 902569220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1014121, 2028242, 4056484, 5070605, 8112968, 10141210, 16225936, 20282420, 32451872, 40564840, 64903744, 81129680, 129807488, 162259360, 324518720, 649037440]

約数ペア:

[(1, 649037440), (2, 324518720), (4, 162259360), (5, 129807488), (8, 81129680), (10, 64903744), (16, 40564840), (20, 32451872), (32, 20282420), (40, 16225936), (64, 10141210), (80, 8112968), (128, 5070605), (160, 4056484), (320, 2028242), (640, 1014121)]