29811980

素因数分解:

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

素因数の和:255

約数の個数: 72

約数和(自身を含む): 70070784

約数和(自身を除く): 40258804

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 110, 121, 127, 194, 220, 242, 254, 388, 484, 485, 508, 605, 635, 970, 1067, 1210, 1270, 1397, 1940, 2134, 2420, 2540, 2794, 4268, 5335, 5588, 6985, 10670, 11737, 12319, 13970, 15367, 21340, 23474, 24638, 27940, 30734, 46948, 49276, 58685, 61468, 61595, 76835, 117370, 123190, 135509, 153670, 234740, 246380, 271018, 307340, 542036, 677545, 1355090, 1490599, 2710180, 2981198, 5962396, 7452995, 14905990, 29811980]

約数ペア:

[(1, 29811980), (2, 14905990), (4, 7452995), (5, 5962396), (10, 2981198), (11, 2710180), (20, 1490599), (22, 1355090), (44, 677545), (55, 542036), (97, 307340), (110, 271018), (121, 246380), (127, 234740), (194, 153670), (220, 135509), (242, 123190), (254, 117370), (388, 76835), (484, 61595), (485, 61468), (508, 58685), (605, 49276), (635, 46948), (970, 30734), (1067, 27940), (1210, 24638), (1270, 23474), (1397, 21340), (1940, 15367), (2134, 13970), (2420, 12319), (2540, 11737), (2794, 10670), (4268, 6985), (5335, 5588)]