428081787

素因数分解:

$3^3\times 7^2\times {\mathrm{491}}^1\times {\mathrm{659}}^1$

素因数の和:1173

約数の個数: 48

約数和(自身を含む): 740361600

約数和(自身を除く): 312279813

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 491, 659, 1323, 1473, 1977, 3437, 4419, 4613, 5931, 10311, 13257, 13839, 17793, 24059, 30933, 32291, 41517, 72177, 92799, 96873, 124551, 216531, 290619, 323569, 649593, 871857, 970707, 2264983, 2912121, 6794949, 8736363, 15854881, 20384847, 47564643, 61154541, 142693929, 428081787]

約数ペア:

[(1, 428081787), (3, 142693929), (7, 61154541), (9, 47564643), (21, 20384847), (27, 15854881), (49, 8736363), (63, 6794949), (147, 2912121), (189, 2264983), (441, 970707), (491, 871857), (659, 649593), (1323, 323569), (1473, 290619), (1977, 216531), (3437, 124551), (4419, 96873), (4613, 92799), (5931, 72177), (10311, 41517), (13257, 32291), (13839, 30933), (17793, 24059)]