21740880

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12941}}^1$

素因数の和:12964

約数の個数: 80

約数和(自身を含む): 77030784

約数和(自身を除く): 55289904

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12941, 25882, 38823, 51764, 64705, 77646, 90587, 103528, 129410, 155292, 181174, 194115, 207056, 258820, 271761, 310584, 362348, 388230, 452935, 517640, 543522, 621168, 724696, 776460, 905870, 1035280, 1087044, 1358805, 1449392, 1552920, 1811740, 2174088, 2717610, 3105840, 3623480, 4348176, 5435220, 7246960, 10870440, 21740880]

約数ペア:

[(1, 21740880), (2, 10870440), (3, 7246960), (4, 5435220), (5, 4348176), (6, 3623480), (7, 3105840), (8, 2717610), (10, 2174088), (12, 1811740), (14, 1552920), (15, 1449392), (16, 1358805), (20, 1087044), (21, 1035280), (24, 905870), (28, 776460), (30, 724696), (35, 621168), (40, 543522), (42, 517640), (48, 452935), (56, 388230), (60, 362348), (70, 310584), (80, 271761), (84, 258820), (105, 207056), (112, 194115), (120, 181174), (140, 155292), (168, 129410), (210, 103528), (240, 90587), (280, 77646), (336, 64705), (420, 51764), (560, 38823), (840, 25882), (1680, 12941)]