19666480

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5717}}^1$

素因数の和:5773

約数の個数: 40

約数和(自身を含む): 46796112

約数和(自身を除く): 27129632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5717, 11434, 22868, 28585, 45736, 57170, 91472, 114340, 228680, 245831, 457360, 491662, 983324, 1229155, 1966648, 2458310, 3933296, 4916620, 9833240, 19666480]

約数ペア:

[(1, 19666480), (2, 9833240), (4, 4916620), (5, 3933296), (8, 2458310), (10, 1966648), (16, 1229155), (20, 983324), (40, 491662), (43, 457360), (80, 245831), (86, 228680), (172, 114340), (215, 91472), (344, 57170), (430, 45736), (688, 28585), (860, 22868), (1720, 11434), (3440, 5717)]