18981513

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{227}}^1$

素因数の和:418

約数の個数: 32

約数和(自身を含む): 29913600

約数和(自身を除く): 10932087

約数列:

[1, 3, 9, 19, 27, 57, 163, 171, 227, 489, 513, 681, 1467, 2043, 3097, 4313, 4401, 6129, 9291, 12939, 27873, 37001, 38817, 83619, 111003, 116451, 333009, 703019, 999027, 2109057, 6327171, 18981513]

約数ペア:

[(1, 18981513), (3, 6327171), (9, 2109057), (19, 999027), (27, 703019), (57, 333009), (163, 116451), (171, 111003), (227, 83619), (489, 38817), (513, 37001), (681, 27873), (1467, 12939), (2043, 9291), (3097, 6129), (4313, 4401)]