20204775

素因数分解:

$3^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{809}}^1$

素因数の和:865

約数の個数: 48

約数和(自身を含む): 38167200

約数和(自身を除く): 17962425

約数列:

[1, 3, 5, 9, 15, 25, 27, 37, 45, 75, 111, 135, 185, 225, 333, 555, 675, 809, 925, 999, 1665, 2427, 2775, 4045, 4995, 7281, 8325, 12135, 20225, 21843, 24975, 29933, 36405, 60675, 89799, 109215, 149665, 182025, 269397, 448995, 546075, 748325, 808191, 1346985, 2244975, 4040955, 6734925, 20204775]

約数ペア:

[(1, 20204775), (3, 6734925), (5, 4040955), (9, 2244975), (15, 1346985), (25, 808191), (27, 748325), (37, 546075), (45, 448995), (75, 269397), (111, 182025), (135, 149665), (185, 109215), (225, 89799), (333, 60675), (555, 36405), (675, 29933), (809, 24975), (925, 21843), (999, 20225), (1665, 12135), (2427, 8325), (2775, 7281), (4045, 4995)]