198960640

素因数分解:

$2^9\times 5^1\times {\mathrm{77719}}^1$

素因数の和:77742

約数の個数: 40

約数和(自身を含む): 477045360

約数和(自身を除く): 278084720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 77719, 155438, 310876, 388595, 621752, 777190, 1243504, 1554380, 2487008, 3108760, 4974016, 6217520, 9948032, 12435040, 19896064, 24870080, 39792128, 49740160, 99480320, 198960640]

約数ペア:

[(1, 198960640), (2, 99480320), (4, 49740160), (5, 39792128), (8, 24870080), (10, 19896064), (16, 12435040), (20, 9948032), (32, 6217520), (40, 4974016), (64, 3108760), (80, 2487008), (128, 1554380), (160, 1243504), (256, 777190), (320, 621752), (512, 388595), (640, 310876), (1280, 155438), (2560, 77719)]