20352520

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5717}}^1$

素因数の和:5817

約数の個数: 32

約数和(自身を含む): 46315800

約数和(自身を除く): 25963280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5717, 11434, 22868, 28585, 45736, 57170, 114340, 228680, 508813, 1017626, 2035252, 2544065, 4070504, 5088130, 10176260, 20352520]

約数ペア:

[(1, 20352520), (2, 10176260), (4, 5088130), (5, 4070504), (8, 2544065), (10, 2035252), (20, 1017626), (40, 508813), (89, 228680), (178, 114340), (356, 57170), (445, 45736), (712, 28585), (890, 22868), (1780, 11434), (3560, 5717)]