21794751

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:485

約数の個数: 40

約数和(自身を含む): 36189648

約数和(自身を除く): 14394897

約数列:

[1, 3, 9, 11, 27, 33, 61, 81, 99, 183, 297, 401, 549, 671, 891, 1203, 1647, 2013, 3609, 4411, 4941, 6039, 10827, 13233, 18117, 24461, 32481, 39699, 54351, 73383, 119097, 220149, 269071, 357291, 660447, 807213, 1981341, 2421639, 7264917, 21794751]

約数ペア:

[(1, 21794751), (3, 7264917), (9, 2421639), (11, 1981341), (27, 807213), (33, 660447), (61, 357291), (81, 269071), (99, 220149), (183, 119097), (297, 73383), (401, 54351), (549, 39699), (671, 32481), (891, 24461), (1203, 18117), (1647, 13233), (2013, 10827), (3609, 6039), (4411, 4941)]