21619872

素因数分解:

$2^5\times 3^4\times {\mathrm{19}}^1\times {\mathrm{439}}^1$

素因数の和:480

約数の個数: 120

約数和(自身を含む): 67082400

約数和(自身を除く): 45462528

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 27, 32, 36, 38, 48, 54, 57, 72, 76, 81, 96, 108, 114, 144, 152, 162, 171, 216, 228, 288, 304, 324, 342, 432, 439, 456, 513, 608, 648, 684, 864, 878, 912, 1026, 1296, 1317, 1368, 1539, 1756, 1824, 2052, 2592, 2634, 2736, 3078, 3512, 3951, 4104, 5268, 5472, 6156, 7024, 7902, 8208, 8341, 10536, 11853, 12312, 14048, 15804, 16416, 16682, 21072, 23706, 24624, 25023, 31608, 33364, 35559, 42144, 47412, 49248, 50046, 63216, 66728, 71118, 75069, 94824, 100092, 126432, 133456, 142236, 150138, 189648, 200184, 225207, 266912, 284472, 300276, 379296, 400368, 450414, 568944, 600552, 675621, 800736, 900828, 1137888, 1201104, 1351242, 1801656, 2402208, 2702484, 3603312, 5404968, 7206624, 10809936, 21619872]

約数ペア:

[(1, 21619872), (2, 10809936), (3, 7206624), (4, 5404968), (6, 3603312), (8, 2702484), (9, 2402208), (12, 1801656), (16, 1351242), (18, 1201104), (19, 1137888), (24, 900828), (27, 800736), (32, 675621), (36, 600552), (38, 568944), (48, 450414), (54, 400368), (57, 379296), (72, 300276), (76, 284472), (81, 266912), (96, 225207), (108, 200184), (114, 189648), (144, 150138), (152, 142236), (162, 133456), (171, 126432), (216, 100092), (228, 94824), (288, 75069), (304, 71118), (324, 66728), (342, 63216), (432, 50046), (439, 49248), (456, 47412), (513, 42144), (608, 35559), (648, 33364), (684, 31608), (864, 25023), (878, 24624), (912, 23706), (1026, 21072), (1296, 16682), (1317, 16416), (1368, 15804), (1539, 14048), (1756, 12312), (1824, 11853), (2052, 10536), (2592, 8341), (2634, 8208), (2736, 7902), (3078, 7024), (3512, 6156), (3951, 5472), (4104, 5268)]