19180165

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 6947195

約数列:

[1, 5, 17, 29, 31, 85, 145, 155, 251, 493, 527, 899, 1255, 2465, 2635, 4267, 4495, 7279, 7781, 15283, 21335, 36395, 38905, 76415, 123743, 132277, 225649, 618715, 661385, 1128245, 3836033, 19180165]

約数ペア:

[(1, 19180165), (5, 3836033), (17, 1128245), (29, 661385), (31, 618715), (85, 225649), (145, 132277), (155, 123743), (251, 76415), (493, 38905), (527, 36395), (899, 21335), (1255, 15283), (2465, 7781), (2635, 7279), (4267, 4495)]