81269649

素因数分解:

$3^6\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:209

約数の個数: 56

約数和(自身を含む): 131579712

約数和(自身を除く): 50310063

約数列:

[1, 3, 9, 23, 27, 37, 69, 81, 111, 131, 207, 243, 333, 393, 621, 729, 851, 999, 1179, 1863, 2553, 2997, 3013, 3537, 4847, 5589, 7659, 8991, 9039, 10611, 14541, 16767, 22977, 26973, 27117, 31833, 43623, 68931, 81351, 95499, 111481, 130869, 206793, 244053, 334443, 392607, 620379, 732159, 1003329, 1177821, 2196477, 3009987, 3533463, 9029961, 27089883, 81269649]

約数ペア:

[(1, 81269649), (3, 27089883), (9, 9029961), (23, 3533463), (27, 3009987), (37, 2196477), (69, 1177821), (81, 1003329), (111, 732159), (131, 620379), (207, 392607), (243, 334443), (333, 244053), (393, 206793), (621, 130869), (729, 111481), (851, 95499), (999, 81351), (1179, 68931), (1863, 43623), (2553, 31833), (2997, 27117), (3013, 26973), (3537, 22977), (4847, 16767), (5589, 14541), (7659, 10611), (8991, 9039)]