16671987

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 27605760

約数和(自身を除く): 10933773

約数列:

[1, 3, 9, 19, 23, 27, 57, 69, 81, 157, 171, 207, 243, 437, 471, 513, 621, 1311, 1413, 1539, 1863, 2983, 3611, 3933, 4239, 4617, 5589, 8949, 10833, 11799, 12717, 26847, 32499, 35397, 38151, 68609, 80541, 97497, 106191, 205827, 241623, 292491, 617481, 724869, 877473, 1852443, 5557329, 16671987]

約数ペア:

[(1, 16671987), (3, 5557329), (9, 1852443), (19, 877473), (23, 724869), (27, 617481), (57, 292491), (69, 241623), (81, 205827), (157, 106191), (171, 97497), (207, 80541), (243, 68609), (437, 38151), (471, 35397), (513, 32499), (621, 26847), (1311, 12717), (1413, 11799), (1539, 10833), (1863, 8949), (2983, 5589), (3611, 4617), (3933, 4239)]