21554220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15619}}^1$

素因数の和:15654

約数の個数: 48

約数和(自身を含む): 62979840

約数和(自身を除く): 41425620

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, 15619, 31238, 46857, 62476, 78095, 93714, 156190, 187428, 234285, 312380, 359237, 468570, 718474, 937140, 1077711, 1436948, 1796185, 2155422, 3592370, 4310844, 5388555, 7184740, 10777110, 21554220]

約数ペア:

[(1, 21554220), (2, 10777110), (3, 7184740), (4, 5388555), (5, 4310844), (6, 3592370), (10, 2155422), (12, 1796185), (15, 1436948), (20, 1077711), (23, 937140), (30, 718474), (46, 468570), (60, 359237), (69, 312380), (92, 234285), (115, 187428), (138, 156190), (230, 93714), (276, 78095), (345, 62476), (460, 46857), (690, 31238), (1380, 15619)]