19961632

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:305

約数の個数: 48

約数和(自身を含む): 40914720

約数和(自身を除く): 20953088

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 89, 163, 172, 178, 326, 344, 356, 652, 688, 712, 1304, 1376, 1424, 2608, 2848, 3827, 5216, 7009, 7654, 14018, 14507, 15308, 28036, 29014, 30616, 56072, 58028, 61232, 112144, 116056, 122464, 224288, 232112, 464224, 623801, 1247602, 2495204, 4990408, 9980816, 19961632]

約数ペア:

[(1, 19961632), (2, 9980816), (4, 4990408), (8, 2495204), (16, 1247602), (32, 623801), (43, 464224), (86, 232112), (89, 224288), (163, 122464), (172, 116056), (178, 112144), (326, 61232), (344, 58028), (356, 56072), (652, 30616), (688, 29014), (712, 28036), (1304, 15308), (1376, 14507), (1424, 14018), (2608, 7654), (2848, 7009), (3827, 5216)]