18413440

素因数分解:

$2^7\times 5^1\times {\mathrm{28771}}^1$

素因数の和:28790

約数の個数: 32

約数和(自身を含む): 44021160

約数和(自身を除く): 25607720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 28771, 57542, 115084, 143855, 230168, 287710, 460336, 575420, 920672, 1150840, 1841344, 2301680, 3682688, 4603360, 9206720, 18413440]

約数ペア:

[(1, 18413440), (2, 9206720), (4, 4603360), (5, 3682688), (8, 2301680), (10, 1841344), (16, 1150840), (20, 920672), (32, 575420), (40, 460336), (64, 287710), (80, 230168), (128, 143855), (160, 115084), (320, 57542), (640, 28771)]