31384280

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{1187}}^1$

素因数の和:1859

約数の個数: 32

約数和(自身を含む): 70781040

約数和(自身を除く): 39396760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1187, 1322, 2374, 2644, 3305, 4748, 5288, 5935, 6610, 9496, 11870, 13220, 23740, 26440, 47480, 784607, 1569214, 3138428, 3923035, 6276856, 7846070, 15692140, 31384280]

約数ペア:

[(1, 31384280), (2, 15692140), (4, 7846070), (5, 6276856), (8, 3923035), (10, 3138428), (20, 1569214), (40, 784607), (661, 47480), (1187, 26440), (1322, 23740), (2374, 13220), (2644, 11870), (3305, 9496), (4748, 6610), (5288, 5935)]