18989140

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{383}}^1$

素因数の和:496

約数の個数: 48

約数和(自身を含む): 41674752

約数和(自身を除く): 22685612

約数列:

[1, 2, 4, 5, 10, 20, 37, 67, 74, 134, 148, 185, 268, 335, 370, 383, 670, 740, 766, 1340, 1532, 1915, 2479, 3830, 4958, 7660, 9916, 12395, 14171, 24790, 25661, 28342, 49580, 51322, 56684, 70855, 102644, 128305, 141710, 256610, 283420, 513220, 949457, 1898914, 3797828, 4747285, 9494570, 18989140]

約数ペア:

[(1, 18989140), (2, 9494570), (4, 4747285), (5, 3797828), (10, 1898914), (20, 949457), (37, 513220), (67, 283420), (74, 256610), (134, 141710), (148, 128305), (185, 102644), (268, 70855), (335, 56684), (370, 51322), (383, 49580), (670, 28342), (740, 25661), (766, 24790), (1340, 14171), (1532, 12395), (1915, 9916), (2479, 7660), (3830, 4958)]