28443640

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{719}}^1$

素因数の和:796

約数の個数: 64

約数和(自身を含む): 68428800

約数和(自身を除く): 39985160

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 43, 46, 86, 92, 115, 172, 184, 215, 230, 344, 430, 460, 719, 860, 920, 989, 1438, 1720, 1978, 2876, 3595, 3956, 4945, 5752, 7190, 7912, 9890, 14380, 16537, 19780, 28760, 30917, 33074, 39560, 61834, 66148, 82685, 123668, 132296, 154585, 165370, 247336, 309170, 330740, 618340, 661480, 711091, 1236680, 1422182, 2844364, 3555455, 5688728, 7110910, 14221820, 28443640]

約数ペア:

[(1, 28443640), (2, 14221820), (4, 7110910), (5, 5688728), (8, 3555455), (10, 2844364), (20, 1422182), (23, 1236680), (40, 711091), (43, 661480), (46, 618340), (86, 330740), (92, 309170), (115, 247336), (172, 165370), (184, 154585), (215, 132296), (230, 123668), (344, 82685), (430, 66148), (460, 61834), (719, 39560), (860, 33074), (920, 30917), (989, 28760), (1438, 19780), (1720, 16537), (1978, 14380), (2876, 9890), (3595, 7912), (3956, 7190), (4945, 5752)]