20180899840

素因数分解:

$2^{11}\times 5^1\times {\mathrm{1970791}}^1$

素因数の和:1970818

約数の個数: 48

約数和(自身を含む): 48422359440

約数和(自身を除く): 28241459600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 5120, 10240, 1970791, 3941582, 7883164, 9853955, 15766328, 19707910, 31532656, 39415820, 63065312, 78831640, 126130624, 157663280, 252261248, 315326560, 504522496, 630653120, 1009044992, 1261306240, 2018089984, 2522612480, 4036179968, 5045224960, 10090449920, 20180899840]

約数ペア:

[(1, 20180899840), (2, 10090449920), (4, 5045224960), (5, 4036179968), (8, 2522612480), (10, 2018089984), (16, 1261306240), (20, 1009044992), (32, 630653120), (40, 504522496), (64, 315326560), (80, 252261248), (128, 157663280), (160, 126130624), (256, 78831640), (320, 63065312), (512, 39415820), (640, 31532656), (1024, 19707910), (1280, 15766328), (2048, 9853955), (2560, 7883164), (5120, 3941582), (10240, 1970791)]