21814390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5413}}^1$

素因数の和:5464

約数の個数: 32

約数和(自身を含む): 43658496

約数和(自身を除く): 21844106

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 5413, 10826, 27065, 54130, 70369, 140738, 167803, 335606, 351845, 703690, 839015, 1678030, 2181439, 4362878, 10907195, 21814390]

約数ペア:

[(1, 21814390), (2, 10907195), (5, 4362878), (10, 2181439), (13, 1678030), (26, 839015), (31, 703690), (62, 351845), (65, 335606), (130, 167803), (155, 140738), (310, 70369), (403, 54130), (806, 27065), (2015, 10826), (4030, 5413)]