81728172

素因数分解:

$2^2\times 3^2\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{227}}^1$

素因数の和:447

約数の個数: 72

約数和(自身を含む): 211878576

約数和(自身を除く): 130150404

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 73, 137, 146, 219, 227, 274, 292, 411, 438, 454, 548, 657, 681, 822, 876, 908, 1233, 1314, 1362, 1644, 2043, 2466, 2628, 2724, 4086, 4932, 8172, 10001, 16571, 20002, 30003, 31099, 33142, 40004, 49713, 60006, 62198, 66284, 90009, 93297, 99426, 120012, 124396, 149139, 180018, 186594, 198852, 279891, 298278, 360036, 373188, 559782, 596556, 1119564, 2270227, 4540454, 6810681, 9080908, 13621362, 20432043, 27242724, 40864086, 81728172]

約数ペア:

[(1, 81728172), (2, 40864086), (3, 27242724), (4, 20432043), (6, 13621362), (9, 9080908), (12, 6810681), (18, 4540454), (36, 2270227), (73, 1119564), (137, 596556), (146, 559782), (219, 373188), (227, 360036), (274, 298278), (292, 279891), (411, 198852), (438, 186594), (454, 180018), (548, 149139), (657, 124396), (681, 120012), (822, 99426), (876, 93297), (908, 90009), (1233, 66284), (1314, 62198), (1362, 60006), (1644, 49713), (2043, 40004), (2466, 33142), (2628, 31099), (2724, 30003), (4086, 20002), (4932, 16571), (8172, 10001)]