20685375

素因数分解:

$3^6\times 5^3\times {\mathrm{227}}^1$

素因数の和:260

約数の個数: 56

約数和(自身を含む): 38875824

約数和(自身を除く): 18190449

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 227, 243, 375, 405, 675, 681, 729, 1125, 1135, 1215, 2025, 2043, 3375, 3405, 3645, 5675, 6075, 6129, 10125, 10215, 17025, 18225, 18387, 28375, 30375, 30645, 51075, 55161, 85125, 91125, 91935, 153225, 165483, 255375, 275805, 459675, 766125, 827415, 1379025, 2298375, 4137075, 6895125, 20685375]

約数ペア:

[(1, 20685375), (3, 6895125), (5, 4137075), (9, 2298375), (15, 1379025), (25, 827415), (27, 766125), (45, 459675), (75, 275805), (81, 255375), (125, 165483), (135, 153225), (225, 91935), (227, 91125), (243, 85125), (375, 55161), (405, 51075), (675, 30645), (681, 30375), (729, 28375), (1125, 18387), (1135, 18225), (1215, 17025), (2025, 10215), (2043, 10125), (3375, 6129), (3405, 6075), (3645, 5675)]