19828360

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:310

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 26827640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 53, 94, 106, 188, 199, 212, 235, 265, 376, 398, 424, 470, 530, 796, 940, 995, 1060, 1592, 1880, 1990, 2120, 2491, 3980, 4982, 7960, 9353, 9964, 10547, 12455, 18706, 19928, 21094, 24910, 37412, 42188, 46765, 49820, 52735, 74824, 84376, 93530, 99640, 105470, 187060, 210940, 374120, 421880, 495709, 991418, 1982836, 2478545, 3965672, 4957090, 9914180, 19828360]

約数ペア:

[(1, 19828360), (2, 9914180), (4, 4957090), (5, 3965672), (8, 2478545), (10, 1982836), (20, 991418), (40, 495709), (47, 421880), (53, 374120), (94, 210940), (106, 187060), (188, 105470), (199, 99640), (212, 93530), (235, 84376), (265, 74824), (376, 52735), (398, 49820), (424, 46765), (470, 42188), (530, 37412), (796, 24910), (940, 21094), (995, 19928), (1060, 18706), (1592, 12455), (1880, 10547), (1990, 9964), (2120, 9353), (2491, 7960), (3980, 4982)]