18271720

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{9719}}^1$

素因数の和:9777

約数の個数: 32

約数和(自身を含む): 41990400

約数和(自身を除く): 23718680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 9719, 19438, 38876, 48595, 77752, 97190, 194380, 388760, 456793, 913586, 1827172, 2283965, 3654344, 4567930, 9135860, 18271720]

約数ペア:

[(1, 18271720), (2, 9135860), (4, 4567930), (5, 3654344), (8, 2283965), (10, 1827172), (20, 913586), (40, 456793), (47, 388760), (94, 194380), (188, 97190), (235, 77752), (376, 48595), (470, 38876), (940, 19438), (1880, 9719)]