81328023

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{353}}^1$

素因数の和:445

約数の個数: 64

約数和(自身を含む): 146810880

約数和(自身を除く): 65482857

約数列:

[1, 3, 7, 9, 21, 23, 27, 53, 63, 69, 159, 161, 189, 207, 353, 371, 477, 483, 621, 1059, 1113, 1219, 1431, 1449, 2471, 3177, 3339, 3657, 4347, 7413, 8119, 8533, 9531, 10017, 10971, 18709, 22239, 24357, 25599, 32913, 56127, 56833, 66717, 73071, 76797, 130963, 168381, 170499, 219213, 230391, 392889, 430307, 505143, 511497, 1178667, 1290921, 1534491, 3012149, 3536001, 3872763, 9036447, 11618289, 27109341, 81328023]

約数ペア:

[(1, 81328023), (3, 27109341), (7, 11618289), (9, 9036447), (21, 3872763), (23, 3536001), (27, 3012149), (53, 1534491), (63, 1290921), (69, 1178667), (159, 511497), (161, 505143), (189, 430307), (207, 392889), (353, 230391), (371, 219213), (477, 170499), (483, 168381), (621, 130963), (1059, 76797), (1113, 73071), (1219, 66717), (1431, 56833), (1449, 56127), (2471, 32913), (3177, 25599), (3339, 24357), (3657, 22239), (4347, 18709), (7413, 10971), (8119, 10017), (8533, 9531)]