18123550

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^2\times {\mathrm{431}}^1$

素因数の和:501

約数の個数: 36

約数和(自身を含む): 34993296

約数和(自身を除く): 16869746

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 145, 290, 431, 725, 841, 862, 1450, 1682, 2155, 4205, 4310, 8410, 10775, 12499, 21025, 21550, 24998, 42050, 62495, 124990, 312475, 362471, 624950, 724942, 1812355, 3624710, 9061775, 18123550]

約数ペア:

[(1, 18123550), (2, 9061775), (5, 3624710), (10, 1812355), (25, 724942), (29, 624950), (50, 362471), (58, 312475), (145, 124990), (290, 62495), (431, 42050), (725, 24998), (841, 21550), (862, 21025), (1450, 12499), (1682, 10775), (2155, 8410), (4205, 4310)]