618218620

素因数分解:

$2^2\times 5^1\times {\mathrm{30910931}}^1$

素因数の和:30910940

約数の個数: 12

約数和(自身を含む): 1298259144

約数和(自身を除く): 680040524

約数列:

[1, 2, 4, 5, 10, 20, 30910931, 61821862, 123643724, 154554655, 309109310, 618218620]

約数ペア:

[(1, 618218620), (2, 309109310), (4, 154554655), (5, 123643724), (10, 61821862), (20, 30910931)]