205417840

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{25423}}^1$

素因数の和:25537

約数の個数: 40

約数和(自身を含む): 482344128

約数和(自身を除く): 276926288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 4040, 8080, 25423, 50846, 101692, 127115, 203384, 254230, 406768, 508460, 1016920, 2033840, 2567723, 5135446, 10270892, 12838615, 20541784, 25677230, 41083568, 51354460, 102708920, 205417840]

約数ペア:

[(1, 205417840), (2, 102708920), (4, 51354460), (5, 41083568), (8, 25677230), (10, 20541784), (16, 12838615), (20, 10270892), (40, 5135446), (80, 2567723), (101, 2033840), (202, 1016920), (404, 508460), (505, 406768), (808, 254230), (1010, 203384), (1616, 127115), (2020, 101692), (4040, 50846), (8080, 25423)]