30397940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{21407}}^1$

素因数の和:21487

約数の個数: 24

約数和(自身を含む): 64737792

約数和(自身を除く): 34339852

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 21407, 42814, 85628, 107035, 214070, 428140, 1519897, 3039794, 6079588, 7599485, 15198970, 30397940]

約数ペア:

[(1, 30397940), (2, 15198970), (4, 7599485), (5, 6079588), (10, 3039794), (20, 1519897), (71, 428140), (142, 214070), (284, 107035), (355, 85628), (710, 42814), (1420, 21407)]