208545519

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1789}}^1$

素因数の和:1880

約数の個数: 48

約数和(自身を含む): 354248160

約数和(自身を除く): 145702641

約数列:

[1, 3, 7, 13, 21, 39, 49, 61, 91, 147, 183, 273, 427, 637, 793, 1281, 1789, 1911, 2379, 2989, 5367, 5551, 8967, 12523, 16653, 23257, 37569, 38857, 69771, 87661, 109129, 116571, 162799, 262983, 327387, 488397, 763903, 1139593, 1418677, 2291709, 3418779, 4256031, 5347321, 9930739, 16041963, 29792217, 69515173, 208545519]

約数ペア:

[(1, 208545519), (3, 69515173), (7, 29792217), (13, 16041963), (21, 9930739), (39, 5347321), (49, 4256031), (61, 3418779), (91, 2291709), (147, 1418677), (183, 1139593), (273, 763903), (427, 488397), (637, 327387), (793, 262983), (1281, 162799), (1789, 116571), (1911, 109129), (2379, 87661), (2989, 69771), (5367, 38857), (5551, 37569), (8967, 23257), (12523, 16653)]