7911980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{443}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 17902080

約数和(自身を除く): 9990100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 47, 76, 94, 95, 188, 190, 235, 380, 443, 470, 886, 893, 940, 1772, 1786, 2215, 3572, 4430, 4465, 8417, 8860, 8930, 16834, 17860, 20821, 33668, 41642, 42085, 83284, 84170, 104105, 168340, 208210, 395599, 416420, 791198, 1582396, 1977995, 3955990, 7911980]

約数ペア:

[(1, 7911980), (2, 3955990), (4, 1977995), (5, 1582396), (10, 791198), (19, 416420), (20, 395599), (38, 208210), (47, 168340), (76, 104105), (94, 84170), (95, 83284), (188, 42085), (190, 41642), (235, 33668), (380, 20821), (443, 17860), (470, 16834), (886, 8930), (893, 8860), (940, 8417), (1772, 4465), (1786, 4430), (2215, 3572)]