21023505

素因数分解:

$3^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1201}}^1$

素因数の和:1601

約数の個数: 24

約数和(自身を含む): 36564840

約数和(自身を除く): 15541335

約数列:

[1, 3, 5, 9, 15, 45, 389, 1167, 1201, 1945, 3501, 3603, 5835, 6005, 10809, 17505, 18015, 54045, 467189, 1401567, 2335945, 4204701, 7007835, 21023505]

約数ペア:

[(1, 21023505), (3, 7007835), (5, 4204701), (9, 2335945), (15, 1401567), (45, 467189), (389, 54045), (1167, 18015), (1201, 17505), (1945, 10809), (3501, 6005), (3603, 5835)]