19966947

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:204

約数の個数: 64

約数和(自身を含む): 36664320

約数和(自身を除く): 16697373

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 61, 77, 91, 109, 143, 183, 231, 273, 327, 427, 429, 671, 763, 793, 1001, 1199, 1281, 1417, 2013, 2289, 2379, 3003, 3597, 4251, 4697, 5551, 6649, 8393, 8723, 9919, 14091, 15587, 16653, 19947, 25179, 26169, 29757, 46543, 46761, 61061, 73139, 86437, 109109, 139629, 183183, 219417, 259311, 327327, 511973, 605059, 950807, 1535919, 1815177, 2852421, 6655649, 19966947]

約数ペア:

[(1, 19966947), (3, 6655649), (7, 2852421), (11, 1815177), (13, 1535919), (21, 950807), (33, 605059), (39, 511973), (61, 327327), (77, 259311), (91, 219417), (109, 183183), (143, 139629), (183, 109109), (231, 86437), (273, 73139), (327, 61061), (427, 46761), (429, 46543), (671, 29757), (763, 26169), (793, 25179), (1001, 19947), (1199, 16653), (1281, 15587), (1417, 14091), (2013, 9919), (2289, 8723), (2379, 8393), (3003, 6649), (3597, 5551), (4251, 4697)]