21763160

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{12653}}^1$

素因数の和:12707

約数の個数: 32

約数和(自身を含む): 50109840

約数和(自身を除く): 28346680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 12653, 25306, 50612, 63265, 101224, 126530, 253060, 506120, 544079, 1088158, 2176316, 2720395, 4352632, 5440790, 10881580, 21763160]

約数ペア:

[(1, 21763160), (2, 10881580), (4, 5440790), (5, 4352632), (8, 2720395), (10, 2176316), (20, 1088158), (40, 544079), (43, 506120), (86, 253060), (172, 126530), (215, 101224), (344, 63265), (430, 50612), (860, 25306), (1720, 12653)]