18690315

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{431}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 35458560

約数和(自身を除く): 16768245

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 59, 105, 147, 177, 245, 295, 413, 431, 735, 885, 1239, 1293, 2065, 2155, 2891, 3017, 6195, 6465, 8673, 9051, 14455, 15085, 21119, 25429, 43365, 45255, 63357, 76287, 105595, 127145, 178003, 316785, 381435, 534009, 890015, 1246021, 2670045, 3738063, 6230105, 18690315]

約数ペア:

[(1, 18690315), (3, 6230105), (5, 3738063), (7, 2670045), (15, 1246021), (21, 890015), (35, 534009), (49, 381435), (59, 316785), (105, 178003), (147, 127145), (177, 105595), (245, 76287), (295, 63357), (413, 45255), (431, 43365), (735, 25429), (885, 21119), (1239, 15085), (1293, 14455), (2065, 9051), (2155, 8673), (2891, 6465), (3017, 6195)]