19143440

素因数分解:

$2^4\times 5^1\times {\mathrm{271}}^1\times {\mathrm{883}}^1$

素因数の和:1167

約数の個数: 40

約数和(自身を含む): 44723328

約数和(自身を除く): 25579888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271, 542, 883, 1084, 1355, 1766, 2168, 2710, 3532, 4336, 4415, 5420, 7064, 8830, 10840, 14128, 17660, 21680, 35320, 70640, 239293, 478586, 957172, 1196465, 1914344, 2392930, 3828688, 4785860, 9571720, 19143440]

約数ペア:

[(1, 19143440), (2, 9571720), (4, 4785860), (5, 3828688), (8, 2392930), (10, 1914344), (16, 1196465), (20, 957172), (40, 478586), (80, 239293), (271, 70640), (542, 35320), (883, 21680), (1084, 17660), (1355, 14128), (1766, 10840), (2168, 8830), (2710, 7064), (3532, 5420), (4336, 4415)]