211388840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{406517}}^1$

素因数の和:406541

約数の個数: 32

約数和(自身を含む): 512212680

約数和(自身を除く): 300823840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 406517, 813034, 1626068, 2032585, 3252136, 4065170, 5284721, 8130340, 10569442, 16260680, 21138884, 26423605, 42277768, 52847210, 105694420, 211388840]

約数ペア:

[(1, 211388840), (2, 105694420), (4, 52847210), (5, 42277768), (8, 26423605), (10, 21138884), (13, 16260680), (20, 10569442), (26, 8130340), (40, 5284721), (52, 4065170), (65, 3252136), (104, 2032585), (130, 1626068), (260, 813034), (520, 406517)]