19990356

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2039}}^1$

素因数の和:2108

約数の個数: 48

約数和(自身を含む): 50265600

約数和(自身を除く): 30275244

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 43, 57, 76, 86, 114, 129, 172, 228, 258, 516, 817, 1634, 2039, 2451, 3268, 4078, 4902, 6117, 8156, 9804, 12234, 24468, 38741, 77482, 87677, 116223, 154964, 175354, 232446, 263031, 350708, 464892, 526062, 1052124, 1665863, 3331726, 4997589, 6663452, 9995178, 19990356]

約数ペア:

[(1, 19990356), (2, 9995178), (3, 6663452), (4, 4997589), (6, 3331726), (12, 1665863), (19, 1052124), (38, 526062), (43, 464892), (57, 350708), (76, 263031), (86, 232446), (114, 175354), (129, 154964), (172, 116223), (228, 87677), (258, 77482), (516, 38741), (817, 24468), (1634, 12234), (2039, 9804), (2451, 8156), (3268, 6117), (4078, 4902)]