20985272

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:217

約数の個数: 96

約数和(自身を含む): 52348800

約数和(自身を除く): 31363528

約数列:

[1, 2, 4, 7, 8, 11, 14, 19, 22, 28, 38, 44, 56, 76, 77, 88, 121, 133, 152, 154, 163, 209, 242, 266, 308, 326, 418, 484, 532, 616, 652, 836, 847, 968, 1064, 1141, 1304, 1463, 1672, 1694, 1793, 2282, 2299, 2926, 3097, 3388, 3586, 4564, 4598, 5852, 6194, 6776, 7172, 9128, 9196, 11704, 12388, 12551, 14344, 16093, 18392, 19723, 21679, 24776, 25102, 32186, 34067, 39446, 43358, 50204, 64372, 68134, 78892, 86716, 100408, 128744, 136268, 138061, 157784, 173432, 238469, 272536, 276122, 374737, 476938, 552244, 749474, 953876, 1104488, 1498948, 1907752, 2623159, 2997896, 5246318, 10492636, 20985272]

約数ペア:

[(1, 20985272), (2, 10492636), (4, 5246318), (7, 2997896), (8, 2623159), (11, 1907752), (14, 1498948), (19, 1104488), (22, 953876), (28, 749474), (38, 552244), (44, 476938), (56, 374737), (76, 276122), (77, 272536), (88, 238469), (121, 173432), (133, 157784), (152, 138061), (154, 136268), (163, 128744), (209, 100408), (242, 86716), (266, 78892), (308, 68134), (326, 64372), (418, 50204), (484, 43358), (532, 39446), (616, 34067), (652, 32186), (836, 25102), (847, 24776), (968, 21679), (1064, 19723), (1141, 18392), (1304, 16093), (1463, 14344), (1672, 12551), (1694, 12388), (1793, 11704), (2282, 9196), (2299, 9128), (2926, 7172), (3097, 6776), (3388, 6194), (3586, 5852), (4564, 4598)]