21085515

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4733}}^1$

素因数の和:4761

約数の個数: 40

約数和(自身を含む): 41242608

約数和(自身を除く): 20157093

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 297, 405, 495, 891, 1485, 4455, 4733, 14199, 23665, 42597, 52063, 70995, 127791, 156189, 212985, 260315, 383373, 468567, 638955, 780945, 1405701, 1916865, 2342835, 4217103, 7028505, 21085515]

約数ペア:

[(1, 21085515), (3, 7028505), (5, 4217103), (9, 2342835), (11, 1916865), (15, 1405701), (27, 780945), (33, 638955), (45, 468567), (55, 383373), (81, 260315), (99, 212985), (135, 156189), (165, 127791), (297, 70995), (405, 52063), (495, 42597), (891, 23665), (1485, 14199), (4455, 4733)]