20281520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{36217}}^1$

素因数の和:36237

約数の個数: 40

約数和(自身を含む): 53892384

約数和(自身を除く): 33610864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 36217, 72434, 144868, 181085, 253519, 289736, 362170, 507038, 579472, 724340, 1014076, 1267595, 1448680, 2028152, 2535190, 2897360, 4056304, 5070380, 10140760, 20281520]

約数ペア:

[(1, 20281520), (2, 10140760), (4, 5070380), (5, 4056304), (7, 2897360), (8, 2535190), (10, 2028152), (14, 1448680), (16, 1267595), (20, 1014076), (28, 724340), (35, 579472), (40, 507038), (56, 362170), (70, 289736), (80, 253519), (112, 181085), (140, 144868), (280, 72434), (560, 36217)]