256989642

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{12721}}^1$

素因数の和:12783

約数の個数: 64

約数和(自身を含む): 649737984

約数和(自身を除く): 392748342

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 37, 39, 42, 74, 78, 91, 111, 182, 222, 259, 273, 481, 518, 546, 777, 962, 1443, 1554, 2886, 3367, 6734, 10101, 12721, 20202, 25442, 38163, 76326, 89047, 165373, 178094, 267141, 330746, 470677, 496119, 534282, 941354, 992238, 1157611, 1412031, 2315222, 2824062, 3294739, 3472833, 6118801, 6589478, 6945666, 9884217, 12237602, 18356403, 19768434, 36712806, 42831607, 85663214, 128494821, 256989642]

約数ペア:

[(1, 256989642), (2, 128494821), (3, 85663214), (6, 42831607), (7, 36712806), (13, 19768434), (14, 18356403), (21, 12237602), (26, 9884217), (37, 6945666), (39, 6589478), (42, 6118801), (74, 3472833), (78, 3294739), (91, 2824062), (111, 2315222), (182, 1412031), (222, 1157611), (259, 992238), (273, 941354), (481, 534282), (518, 496119), (546, 470677), (777, 330746), (962, 267141), (1443, 178094), (1554, 165373), (2886, 89047), (3367, 76326), (6734, 38163), (10101, 25442), (12721, 20202)]