243359240

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{12391}}^1$

素因数の和:12893

約数の個数: 32

約数和(自身を含む): 548717760

約数和(自身を除く): 305358520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4910, 9820, 12391, 19640, 24782, 49564, 61955, 99128, 123910, 247820, 495640, 6083981, 12167962, 24335924, 30419905, 48671848, 60839810, 121679620, 243359240]

約数ペア:

[(1, 243359240), (2, 121679620), (4, 60839810), (5, 48671848), (8, 30419905), (10, 24335924), (20, 12167962), (40, 6083981), (491, 495640), (982, 247820), (1964, 123910), (2455, 99128), (3928, 61955), (4910, 49564), (9820, 24782), (12391, 19640)]