19975424

素因数分解:

$2^8\times 7^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 46505088

約数和(自身を除く): 26529664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 71, 112, 128, 142, 157, 224, 256, 284, 314, 448, 497, 568, 628, 896, 994, 1099, 1136, 1256, 1792, 1988, 2198, 2272, 2512, 3976, 4396, 4544, 5024, 7952, 8792, 9088, 10048, 11147, 15904, 17584, 18176, 20096, 22294, 31808, 35168, 40192, 44588, 63616, 70336, 78029, 89176, 127232, 140672, 156058, 178352, 281344, 312116, 356704, 624232, 713408, 1248464, 1426816, 2496928, 2853632, 4993856, 9987712, 19975424]

約数ペア:

[(1, 19975424), (2, 9987712), (4, 4993856), (7, 2853632), (8, 2496928), (14, 1426816), (16, 1248464), (28, 713408), (32, 624232), (56, 356704), (64, 312116), (71, 281344), (112, 178352), (128, 156058), (142, 140672), (157, 127232), (224, 89176), (256, 78029), (284, 70336), (314, 63616), (448, 44588), (497, 40192), (568, 35168), (628, 31808), (896, 22294), (994, 20096), (1099, 18176), (1136, 17584), (1256, 15904), (1792, 11147), (1988, 10048), (2198, 9088), (2272, 8792), (2512, 7952), (3976, 5024), (4396, 4544)]