19742805

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 38016000

約数和(自身を除く): 18273195

約数列:

[1, 3, 5, 9, 15, 19, 27, 43, 45, 57, 95, 129, 135, 171, 179, 215, 285, 387, 513, 537, 645, 817, 855, 895, 1161, 1611, 1935, 2451, 2565, 2685, 3401, 4085, 4833, 5805, 7353, 7697, 8055, 10203, 12255, 17005, 22059, 23091, 24165, 30609, 36765, 38485, 51015, 69273, 91827, 110295, 115455, 146243, 153045, 207819, 346365, 438729, 459135, 731215, 1039095, 1316187, 2193645, 3948561, 6580935, 19742805]

約数ペア:

[(1, 19742805), (3, 6580935), (5, 3948561), (9, 2193645), (15, 1316187), (19, 1039095), (27, 731215), (43, 459135), (45, 438729), (57, 346365), (95, 207819), (129, 153045), (135, 146243), (171, 115455), (179, 110295), (215, 91827), (285, 69273), (387, 51015), (513, 38485), (537, 36765), (645, 30609), (817, 24165), (855, 23091), (895, 22059), (1161, 17005), (1611, 12255), (1935, 10203), (2451, 8055), (2565, 7697), (2685, 7353), (3401, 5805), (4085, 4833)]