18957771

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 34265088

約数和(自身を除く): 15307317

約数列:

[1, 3, 7, 9, 17, 21, 31, 51, 63, 93, 119, 153, 217, 279, 357, 527, 571, 651, 1071, 1581, 1713, 1953, 3689, 3997, 4743, 5139, 9707, 11067, 11991, 17701, 29121, 33201, 35973, 53103, 67949, 87363, 123907, 159309, 203847, 300917, 371721, 611541, 902751, 1115163, 2106419, 2708253, 6319257, 18957771]

約数ペア:

[(1, 18957771), (3, 6319257), (7, 2708253), (9, 2106419), (17, 1115163), (21, 902751), (31, 611541), (51, 371721), (63, 300917), (93, 203847), (119, 159309), (153, 123907), (217, 87363), (279, 67949), (357, 53103), (527, 35973), (571, 33201), (651, 29121), (1071, 17701), (1581, 11991), (1713, 11067), (1953, 9707), (3689, 5139), (3997, 4743)]