21091145475

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{154769}}^1$

素因数の和:154884

約数の個数: 48

約数和(自身を含む): 36847641600

約数和(自身を除く): 15756496125

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 79, 115, 237, 345, 395, 575, 1185, 1725, 1817, 1975, 5451, 5925, 9085, 27255, 45425, 136275, 154769, 464307, 773845, 2321535, 3559687, 3869225, 10679061, 11607675, 12226751, 17798435, 36680253, 53395305, 61133755, 88992175, 183401265, 266976525, 281215273, 305668775, 843645819, 917006325, 1406076365, 4218229095, 7030381825, 21091145475]

約数ペア:

[(1, 21091145475), (3, 7030381825), (5, 4218229095), (15, 1406076365), (23, 917006325), (25, 843645819), (69, 305668775), (75, 281215273), (79, 266976525), (115, 183401265), (237, 88992175), (345, 61133755), (395, 53395305), (575, 36680253), (1185, 17798435), (1725, 12226751), (1817, 11607675), (1975, 10679061), (5451, 3869225), (5925, 3559687), (9085, 2321535), (27255, 773845), (45425, 464307), (136275, 154769)]