20903720

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{11119}}^1$

素因数の和:11177

約数の個数: 32

約数和(自身を含む): 48038400

約数和(自身を除く): 27134680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 11119, 22238, 44476, 55595, 88952, 111190, 222380, 444760, 522593, 1045186, 2090372, 2612965, 4180744, 5225930, 10451860, 20903720]

約数ペア:

[(1, 20903720), (2, 10451860), (4, 5225930), (5, 4180744), (8, 2612965), (10, 2090372), (20, 1045186), (40, 522593), (47, 444760), (94, 222380), (188, 111190), (235, 88952), (376, 55595), (470, 44476), (940, 22238), (1880, 11119)]