31720920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3433}}^1$

素因数の和:3465

約数の個数: 128

約数和(自身を含む): 118679040

約数和(自身を除く): 86958120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 14, 15, 20, 21, 22, 24, 28, 30, 33, 35, 40, 42, 44, 55, 56, 60, 66, 70, 77, 84, 88, 105, 110, 120, 132, 140, 154, 165, 168, 210, 220, 231, 264, 280, 308, 330, 385, 420, 440, 462, 616, 660, 770, 840, 924, 1155, 1320, 1540, 1848, 2310, 3080, 3433, 4620, 6866, 9240, 10299, 13732, 17165, 20598, 24031, 27464, 34330, 37763, 41196, 48062, 51495, 68660, 72093, 75526, 82392, 96124, 102990, 113289, 120155, 137320, 144186, 151052, 188815, 192248, 205980, 226578, 240310, 264341, 288372, 302104, 360465, 377630, 411960, 453156, 480620, 528682, 566445, 576744, 720930, 755260, 793023, 906312, 961240, 1057364, 1132890, 1321705, 1441860, 1510520, 1586046, 2114728, 2265780, 2643410, 2883720, 3172092, 3965115, 4531560, 5286820, 6344184, 7930230, 10573640, 15860460, 31720920]

約数ペア:

[(1, 31720920), (2, 15860460), (3, 10573640), (4, 7930230), (5, 6344184), (6, 5286820), (7, 4531560), (8, 3965115), (10, 3172092), (11, 2883720), (12, 2643410), (14, 2265780), (15, 2114728), (20, 1586046), (21, 1510520), (22, 1441860), (24, 1321705), (28, 1132890), (30, 1057364), (33, 961240), (35, 906312), (40, 793023), (42, 755260), (44, 720930), (55, 576744), (56, 566445), (60, 528682), (66, 480620), (70, 453156), (77, 411960), (84, 377630), (88, 360465), (105, 302104), (110, 288372), (120, 264341), (132, 240310), (140, 226578), (154, 205980), (165, 192248), (168, 188815), (210, 151052), (220, 144186), (231, 137320), (264, 120155), (280, 113289), (308, 102990), (330, 96124), (385, 82392), (420, 75526), (440, 72093), (462, 68660), (616, 51495), (660, 48062), (770, 41196), (840, 37763), (924, 34330), (1155, 27464), (1320, 24031), (1540, 20598), (1848, 17165), (2310, 13732), (3080, 10299), (3433, 9240), (4620, 6866)]