81641115

素因数分解:

$3^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{4289}}^1$

素因数の和:4353

約数の個数: 40

約数和(自身を含む): 149497920

約数和(自身を除く): 67856805

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 81, 135, 141, 235, 405, 423, 705, 1269, 2115, 3807, 4289, 6345, 12867, 19035, 21445, 38601, 64335, 115803, 193005, 201583, 347409, 579015, 604749, 1007915, 1737045, 1814247, 3023745, 5442741, 9071235, 16328223, 27213705, 81641115]

約数ペア:

[(1, 81641115), (3, 27213705), (5, 16328223), (9, 9071235), (15, 5442741), (27, 3023745), (45, 1814247), (47, 1737045), (81, 1007915), (135, 604749), (141, 579015), (235, 347409), (405, 201583), (423, 193005), (705, 115803), (1269, 64335), (2115, 38601), (3807, 21445), (4289, 19035), (6345, 12867)]