28481820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20639}}^1$

素因数の和:20674

約数の個数: 48

約数和(自身を含む): 83220480

約数和(自身を除く): 54738660

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 20639, 41278, 61917, 82556, 103195, 123834, 206390, 247668, 309585, 412780, 474697, 619170, 949394, 1238340, 1424091, 1898788, 2373485, 2848182, 4746970, 5696364, 7120455, 9493940, 14240910, 28481820]

約数ペア:

[(1, 28481820), (2, 14240910), (3, 9493940), (4, 7120455), (5, 5696364), (6, 4746970), (10, 2848182), (12, 2373485), (15, 1898788), (20, 1424091), (23, 1238340), (30, 949394), (46, 619170), (60, 474697), (69, 412780), (92, 309585), (115, 247668), (138, 206390), (230, 123834), (276, 103195), (345, 82556), (460, 61917), (690, 41278), (1380, 20639)]