20251280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{43}}^1$

素因数の和:121

約数の個数: 120

約数和(自身を含む): 57026112

約数和(自身を除く): 36774832

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 43, 56, 58, 70, 80, 86, 112, 116, 140, 145, 172, 203, 215, 232, 280, 290, 301, 344, 406, 430, 464, 560, 580, 602, 688, 812, 841, 860, 1015, 1160, 1204, 1247, 1505, 1624, 1682, 1720, 2030, 2320, 2408, 2494, 3010, 3248, 3364, 3440, 4060, 4205, 4816, 4988, 5887, 6020, 6235, 6728, 8120, 8410, 8729, 9976, 11774, 12040, 12470, 13456, 16240, 16820, 17458, 19952, 23548, 24080, 24940, 29435, 33640, 34916, 36163, 43645, 47096, 49880, 58870, 67280, 69832, 72326, 87290, 94192, 99760, 117740, 139664, 144652, 174580, 180815, 235480, 253141, 289304, 349160, 361630, 470960, 506282, 578608, 698320, 723260, 1012564, 1265705, 1446520, 2025128, 2531410, 2893040, 4050256, 5062820, 10125640, 20251280]

約数ペア:

[(1, 20251280), (2, 10125640), (4, 5062820), (5, 4050256), (7, 2893040), (8, 2531410), (10, 2025128), (14, 1446520), (16, 1265705), (20, 1012564), (28, 723260), (29, 698320), (35, 578608), (40, 506282), (43, 470960), (56, 361630), (58, 349160), (70, 289304), (80, 253141), (86, 235480), (112, 180815), (116, 174580), (140, 144652), (145, 139664), (172, 117740), (203, 99760), (215, 94192), (232, 87290), (280, 72326), (290, 69832), (301, 67280), (344, 58870), (406, 49880), (430, 47096), (464, 43645), (560, 36163), (580, 34916), (602, 33640), (688, 29435), (812, 24940), (841, 24080), (860, 23548), (1015, 19952), (1160, 17458), (1204, 16820), (1247, 16240), (1505, 13456), (1624, 12470), (1682, 12040), (1720, 11774), (2030, 9976), (2320, 8729), (2408, 8410), (2494, 8120), (3010, 6728), (3248, 6235), (3364, 6020), (3440, 5887), (4060, 4988), (4205, 4816)]