80199880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{1999}}^1$

素因数の和:2086

約数の個数: 64

約数和(自身を含む): 194400000

約数和(自身を除く): 114200120

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 59, 68, 85, 118, 136, 170, 236, 295, 340, 472, 590, 680, 1003, 1180, 1999, 2006, 2360, 3998, 4012, 5015, 7996, 8024, 9995, 10030, 15992, 19990, 20060, 33983, 39980, 40120, 67966, 79960, 117941, 135932, 169915, 235882, 271864, 339830, 471764, 589705, 679660, 943528, 1179410, 1359320, 2004997, 2358820, 4009994, 4717640, 8019988, 10024985, 16039976, 20049970, 40099940, 80199880]

約数ペア:

[(1, 80199880), (2, 40099940), (4, 20049970), (5, 16039976), (8, 10024985), (10, 8019988), (17, 4717640), (20, 4009994), (34, 2358820), (40, 2004997), (59, 1359320), (68, 1179410), (85, 943528), (118, 679660), (136, 589705), (170, 471764), (236, 339830), (295, 271864), (340, 235882), (472, 169915), (590, 135932), (680, 117941), (1003, 79960), (1180, 67966), (1999, 40120), (2006, 39980), (2360, 33983), (3998, 20060), (4012, 19990), (5015, 15992), (7996, 10030), (8024, 9995)]