20112520

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2383}}^1$

素因数の和:2605

約数の個数: 32

約数和(自身を含む): 45486720

約数和(自身を除く): 25374200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 2383, 4220, 4766, 8440, 9532, 11915, 19064, 23830, 47660, 95320, 502813, 1005626, 2011252, 2514065, 4022504, 5028130, 10056260, 20112520]

約数ペア:

[(1, 20112520), (2, 10056260), (4, 5028130), (5, 4022504), (8, 2514065), (10, 2011252), (20, 1005626), (40, 502813), (211, 95320), (422, 47660), (844, 23830), (1055, 19064), (1688, 11915), (2110, 9532), (2383, 8440), (4220, 4766)]