71440640

素因数分解:

$2^8\times 5^1\times {\mathrm{55813}}^1$

素因数の和:55834

約数の個数: 36

約数和(自身を含む): 171125724

約数和(自身を除く): 99685084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 55813, 111626, 223252, 279065, 446504, 558130, 893008, 1116260, 1786016, 2232520, 3572032, 4465040, 7144064, 8930080, 14288128, 17860160, 35720320, 71440640]

約数ペア:

[(1, 71440640), (2, 35720320), (4, 17860160), (5, 14288128), (8, 8930080), (10, 7144064), (16, 4465040), (20, 3572032), (32, 2232520), (40, 1786016), (64, 1116260), (80, 893008), (128, 558130), (160, 446504), (256, 279065), (320, 223252), (640, 111626), (1280, 55813)]