1987011

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1$

素因数の和:82

約数の個数: 48

約数和(自身を含む): 3485664

約数和(自身を除く): 1498653

約数列:

[1, 3, 9, 13, 17, 27, 37, 39, 51, 81, 111, 117, 153, 221, 243, 333, 351, 459, 481, 629, 663, 999, 1053, 1377, 1443, 1887, 1989, 2997, 3159, 4131, 4329, 5661, 5967, 8177, 8991, 12987, 16983, 17901, 24531, 38961, 50949, 53703, 73593, 116883, 152847, 220779, 662337, 1987011]

約数ペア:

[(1, 1987011), (3, 662337), (9, 220779), (13, 152847), (17, 116883), (27, 73593), (37, 53703), (39, 50949), (51, 38961), (81, 24531), (111, 17901), (117, 16983), (153, 12987), (221, 8991), (243, 8177), (333, 5967), (351, 5661), (459, 4329), (481, 4131), (629, 3159), (663, 2997), (999, 1989), (1053, 1887), (1377, 1443)]