19080159

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 31518720

約数和(自身を除く): 12438561

約数列:

[1, 3, 7, 21, 31, 49, 53, 79, 93, 147, 159, 217, 237, 371, 553, 651, 1113, 1519, 1643, 1659, 2449, 2597, 3871, 4187, 4557, 4929, 7347, 7791, 11501, 11613, 12561, 17143, 29309, 34503, 51429, 80507, 87927, 120001, 129797, 205163, 241521, 360003, 389391, 615489, 908579, 2725737, 6360053, 19080159]

約数ペア:

[(1, 19080159), (3, 6360053), (7, 2725737), (21, 908579), (31, 615489), (49, 389391), (53, 360003), (79, 241521), (93, 205163), (147, 129797), (159, 120001), (217, 87927), (237, 80507), (371, 51429), (553, 34503), (651, 29309), (1113, 17143), (1519, 12561), (1643, 11613), (1659, 11501), (2449, 7791), (2597, 7347), (3871, 4929), (4187, 4557)]