18781240

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{5657}}^1$

素因数の和:5751

約数の個数: 32

約数和(自身を含む): 42774480

約数和(自身を除く): 23993240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 5657, 11314, 22628, 28285, 45256, 56570, 113140, 226280, 469531, 939062, 1878124, 2347655, 3756248, 4695310, 9390620, 18781240]

約数ペア:

[(1, 18781240), (2, 9390620), (4, 4695310), (5, 3756248), (8, 2347655), (10, 1878124), (20, 939062), (40, 469531), (83, 226280), (166, 113140), (332, 56570), (415, 45256), (664, 28285), (830, 22628), (1660, 11314), (3320, 5657)]