28396280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{5867}}^1$

素因数の和:5900

約数の個数: 48

約数和(自身を含む): 70239960

約数和(自身を除く): 41843680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4840, 5867, 11734, 23468, 29335, 46936, 58670, 64537, 117340, 129074, 234680, 258148, 322685, 516296, 645370, 709907, 1290740, 1419814, 2581480, 2839628, 3549535, 5679256, 7099070, 14198140, 28396280]

約数ペア:

[(1, 28396280), (2, 14198140), (4, 7099070), (5, 5679256), (8, 3549535), (10, 2839628), (11, 2581480), (20, 1419814), (22, 1290740), (40, 709907), (44, 645370), (55, 516296), (88, 322685), (110, 258148), (121, 234680), (220, 129074), (242, 117340), (440, 64537), (484, 58670), (605, 46936), (968, 29335), (1210, 23468), (2420, 11734), (4840, 5867)]