398812908

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{2556493}}^1$

素因数の和:2556513

約数の個数: 24

約数和(自身を含む): 1002145648

約数和(自身を除く): 603332740

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 2556493, 5112986, 7669479, 10225972, 15338958, 30677916, 33234409, 66468818, 99703227, 132937636, 199406454, 398812908]

約数ペア:

[(1, 398812908), (2, 199406454), (3, 132937636), (4, 99703227), (6, 66468818), (12, 33234409), (13, 30677916), (26, 15338958), (39, 10225972), (52, 7669479), (78, 5112986), (156, 2556493)]