18964305

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 34909056

約数和(自身を除く): 15944751

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 73, 115, 207, 219, 251, 345, 365, 657, 753, 1035, 1095, 1255, 1679, 2259, 3285, 3765, 5037, 5773, 8395, 11295, 15111, 17319, 18323, 25185, 28865, 51957, 54969, 75555, 86595, 91615, 164907, 259785, 274845, 421429, 824535, 1264287, 2107145, 3792861, 6321435, 18964305]

約数ペア:

[(1, 18964305), (3, 6321435), (5, 3792861), (9, 2107145), (15, 1264287), (23, 824535), (45, 421429), (69, 274845), (73, 259785), (115, 164907), (207, 91615), (219, 86595), (251, 75555), (345, 54969), (365, 51957), (657, 28865), (753, 25185), (1035, 18323), (1095, 17319), (1255, 15111), (1679, 11295), (2259, 8395), (3285, 5773), (3765, 5037)]