21681440

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:250

約数の個数: 96

約数和(自身を含む): 56899584

約数和(自身を除く): 35218144

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 97, 110, 127, 160, 176, 194, 220, 254, 352, 388, 440, 485, 508, 635, 776, 880, 970, 1016, 1067, 1270, 1397, 1552, 1760, 1940, 2032, 2134, 2540, 2794, 3104, 3880, 4064, 4268, 5080, 5335, 5588, 6985, 7760, 8536, 10160, 10670, 11176, 12319, 13970, 15520, 17072, 20320, 21340, 22352, 24638, 27940, 34144, 42680, 44704, 49276, 55880, 61595, 85360, 98552, 111760, 123190, 135509, 170720, 197104, 223520, 246380, 271018, 394208, 492760, 542036, 677545, 985520, 1084072, 1355090, 1971040, 2168144, 2710180, 4336288, 5420360, 10840720, 21681440]

約数ペア:

[(1, 21681440), (2, 10840720), (4, 5420360), (5, 4336288), (8, 2710180), (10, 2168144), (11, 1971040), (16, 1355090), (20, 1084072), (22, 985520), (32, 677545), (40, 542036), (44, 492760), (55, 394208), (80, 271018), (88, 246380), (97, 223520), (110, 197104), (127, 170720), (160, 135509), (176, 123190), (194, 111760), (220, 98552), (254, 85360), (352, 61595), (388, 55880), (440, 49276), (485, 44704), (508, 42680), (635, 34144), (776, 27940), (880, 24638), (970, 22352), (1016, 21340), (1067, 20320), (1270, 17072), (1397, 15520), (1552, 13970), (1760, 12319), (1940, 11176), (2032, 10670), (2134, 10160), (2540, 8536), (2794, 7760), (3104, 6985), (3880, 5588), (4064, 5335), (4268, 5080)]