28931320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1399}}^1$

素因数の和:1468

約数の個数: 64

約数和(自身を含む): 72576000

約数和(自身を除く): 43644680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 55, 88, 94, 110, 188, 220, 235, 376, 440, 470, 517, 940, 1034, 1399, 1880, 2068, 2585, 2798, 4136, 5170, 5596, 6995, 10340, 11192, 13990, 15389, 20680, 27980, 30778, 55960, 61556, 65753, 76945, 123112, 131506, 153890, 263012, 307780, 328765, 526024, 615560, 657530, 723283, 1315060, 1446566, 2630120, 2893132, 3616415, 5786264, 7232830, 14465660, 28931320]

約数ペア:

[(1, 28931320), (2, 14465660), (4, 7232830), (5, 5786264), (8, 3616415), (10, 2893132), (11, 2630120), (20, 1446566), (22, 1315060), (40, 723283), (44, 657530), (47, 615560), (55, 526024), (88, 328765), (94, 307780), (110, 263012), (188, 153890), (220, 131506), (235, 123112), (376, 76945), (440, 65753), (470, 61556), (517, 55960), (940, 30778), (1034, 27980), (1399, 20680), (1880, 15389), (2068, 13990), (2585, 11192), (2798, 10340), (4136, 6995), (5170, 5596)]