20040401440

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^2\times {\mathrm{56701}}^1$

素因数の和:56810

約数の個数: 72

約数和(自身を含む): 48375084492

約数和(自身を除く): 28334683052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 80, 94, 160, 188, 235, 376, 470, 752, 940, 1504, 1880, 2209, 3760, 4418, 7520, 8836, 11045, 17672, 22090, 35344, 44180, 56701, 70688, 88360, 113402, 176720, 226804, 283505, 353440, 453608, 567010, 907216, 1134020, 1814432, 2268040, 2664947, 4536080, 5329894, 9072160, 10659788, 13324735, 21319576, 26649470, 42639152, 53298940, 85278304, 106597880, 125252509, 213195760, 250505018, 426391520, 501010036, 626262545, 1002020072, 1252525090, 2004040144, 2505050180, 4008080288, 5010100360, 10020200720, 20040401440]

約数ペア:

[(1, 20040401440), (2, 10020200720), (4, 5010100360), (5, 4008080288), (8, 2505050180), (10, 2004040144), (16, 1252525090), (20, 1002020072), (32, 626262545), (40, 501010036), (47, 426391520), (80, 250505018), (94, 213195760), (160, 125252509), (188, 106597880), (235, 85278304), (376, 53298940), (470, 42639152), (752, 26649470), (940, 21319576), (1504, 13324735), (1880, 10659788), (2209, 9072160), (3760, 5329894), (4418, 4536080), (7520, 2664947), (8836, 2268040), (11045, 1814432), (17672, 1134020), (22090, 907216), (35344, 567010), (44180, 453608), (56701, 353440), (70688, 283505), (88360, 226804), (113402, 176720)]