18712685

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 25159680

約数和(自身を除く): 6446995

約数列:

[1, 5, 23, 29, 31, 115, 145, 155, 181, 667, 713, 899, 905, 3335, 3565, 4163, 4495, 5249, 5611, 20677, 20815, 26245, 28055, 103385, 120727, 129053, 162719, 603635, 645265, 813595, 3742537, 18712685]

約数ペア:

[(1, 18712685), (5, 3742537), (23, 813595), (29, 645265), (31, 603635), (115, 162719), (145, 129053), (155, 120727), (181, 103385), (667, 28055), (713, 26245), (899, 20815), (905, 20677), (3335, 5611), (3565, 5249), (4163, 4495)]