8777020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{883}}^1$

素因数の和:970

約数の個数: 48

約数和(自身を含む): 21385728

約数和(自身を除く): 12608708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 883, 994, 1420, 1766, 1988, 2485, 3532, 4415, 4970, 6181, 8830, 9940, 12362, 17660, 24724, 30905, 61810, 62693, 123620, 125386, 250772, 313465, 438851, 626930, 877702, 1253860, 1755404, 2194255, 4388510, 8777020]

約数ペア:

[(1, 8777020), (2, 4388510), (4, 2194255), (5, 1755404), (7, 1253860), (10, 877702), (14, 626930), (20, 438851), (28, 313465), (35, 250772), (70, 125386), (71, 123620), (140, 62693), (142, 61810), (284, 30905), (355, 24724), (497, 17660), (710, 12362), (883, 9940), (994, 8830), (1420, 6181), (1766, 4970), (1988, 4415), (2485, 3532)]