20929635

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 38918880

約数和(自身を除く): 17989245

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 109, 153, 251, 255, 327, 545, 753, 765, 981, 1255, 1635, 1853, 2259, 3765, 4267, 4905, 5559, 9265, 11295, 12801, 16677, 21335, 27359, 27795, 38403, 64005, 82077, 83385, 136795, 192015, 246231, 410385, 465103, 1231155, 1395309, 2325515, 4185927, 6976545, 20929635]

約数ペア:

[(1, 20929635), (3, 6976545), (5, 4185927), (9, 2325515), (15, 1395309), (17, 1231155), (45, 465103), (51, 410385), (85, 246231), (109, 192015), (153, 136795), (251, 83385), (255, 82077), (327, 64005), (545, 38403), (753, 27795), (765, 27359), (981, 21335), (1255, 16677), (1635, 12801), (1853, 11295), (2259, 9265), (3765, 5559), (4267, 4905)]