409840

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:169

約数の個数: 40

約数和(自身を含む): 982080

約数和(自身を除く): 572240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 109, 188, 218, 235, 376, 436, 470, 545, 752, 872, 940, 1090, 1744, 1880, 2180, 3760, 4360, 5123, 8720, 10246, 20492, 25615, 40984, 51230, 81968, 102460, 204920, 409840]

約数ペア:

[(1, 409840), (2, 204920), (4, 102460), (5, 81968), (8, 51230), (10, 40984), (16, 25615), (20, 20492), (40, 10246), (47, 8720), (80, 5123), (94, 4360), (109, 3760), (188, 2180), (218, 1880), (235, 1744), (376, 1090), (436, 940), (470, 872), (545, 752)]