261008840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{210491}}^1$

素因数の和:210533

約数の個数: 32

約数和(自身を含む): 606216960

約数和(自身を除く): 345208120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 210491, 420982, 841964, 1052455, 1683928, 2104910, 4209820, 6525221, 8419640, 13050442, 26100884, 32626105, 52201768, 65252210, 130504420, 261008840]

約数ペア:

[(1, 261008840), (2, 130504420), (4, 65252210), (5, 52201768), (8, 32626105), (10, 26100884), (20, 13050442), (31, 8419640), (40, 6525221), (62, 4209820), (124, 2104910), (155, 1683928), (248, 1052455), (310, 841964), (620, 420982), (1240, 210491)]