19754816

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{271}}^1$

素因数の和:367

約数の個数: 56

約数和(自身を含む): 42281856

約数和(自身を除く): 22527040

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 67, 68, 134, 136, 268, 271, 272, 536, 542, 544, 1072, 1084, 1088, 1139, 2144, 2168, 2278, 4288, 4336, 4556, 4607, 8672, 9112, 9214, 17344, 18157, 18224, 18428, 36314, 36448, 36856, 72628, 72896, 73712, 145256, 147424, 290512, 294848, 308669, 581024, 617338, 1162048, 1234676, 2469352, 4938704, 9877408, 19754816]

約数ペア:

[(1, 19754816), (2, 9877408), (4, 4938704), (8, 2469352), (16, 1234676), (17, 1162048), (32, 617338), (34, 581024), (64, 308669), (67, 294848), (68, 290512), (134, 147424), (136, 145256), (268, 73712), (271, 72896), (272, 72628), (536, 36856), (542, 36448), (544, 36314), (1072, 18428), (1084, 18224), (1088, 18157), (1139, 17344), (2144, 9214), (2168, 9112), (2278, 8672), (4288, 4607), (4336, 4556)]