18391880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{313}}^1$

素因数の和:450

約数の個数: 64

約数和(自身を含む): 45102960

約数和(自身を除く): 26711080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 113, 130, 226, 260, 313, 452, 520, 565, 626, 904, 1130, 1252, 1469, 1565, 2260, 2504, 2938, 3130, 4069, 4520, 5876, 6260, 7345, 8138, 11752, 12520, 14690, 16276, 20345, 29380, 32552, 35369, 40690, 58760, 70738, 81380, 141476, 162760, 176845, 282952, 353690, 459797, 707380, 919594, 1414760, 1839188, 2298985, 3678376, 4597970, 9195940, 18391880]

約数ペア:

[(1, 18391880), (2, 9195940), (4, 4597970), (5, 3678376), (8, 2298985), (10, 1839188), (13, 1414760), (20, 919594), (26, 707380), (40, 459797), (52, 353690), (65, 282952), (104, 176845), (113, 162760), (130, 141476), (226, 81380), (260, 70738), (313, 58760), (452, 40690), (520, 35369), (565, 32552), (626, 29380), (904, 20345), (1130, 16276), (1252, 14690), (1469, 12520), (1565, 11752), (2260, 8138), (2504, 7345), (2938, 6260), (3130, 5876), (4069, 4520)]