81713871

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{227}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 129752064

約数和(自身を除く): 48038193

約数列:

[1, 3, 9, 23, 37, 47, 69, 111, 141, 207, 227, 333, 423, 681, 851, 1081, 1739, 2043, 2553, 3243, 5217, 5221, 7659, 8399, 9729, 10669, 15651, 15663, 25197, 32007, 39997, 46989, 75591, 96021, 119991, 193177, 245387, 359973, 394753, 579531, 736161, 1184259, 1738593, 2208483, 3552777, 9079319, 27237957, 81713871]

約数ペア:

[(1, 81713871), (3, 27237957), (9, 9079319), (23, 3552777), (37, 2208483), (47, 1738593), (69, 1184259), (111, 736161), (141, 579531), (207, 394753), (227, 359973), (333, 245387), (423, 193177), (681, 119991), (851, 96021), (1081, 75591), (1739, 46989), (2043, 39997), (2553, 32007), (3243, 25197), (5217, 15663), (5221, 15651), (7659, 10669), (8399, 9729)]