20440238

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1$

素因数の和:321

約数の個数: 64

約数和(自身を含む): 41610240

約数和(自身を除く): 21170002

約数列:

[1, 2, 7, 13, 14, 19, 23, 26, 38, 46, 91, 133, 161, 182, 247, 257, 266, 299, 322, 437, 494, 514, 598, 874, 1729, 1799, 2093, 3059, 3341, 3458, 3598, 4186, 4883, 5681, 5911, 6118, 6682, 9766, 11362, 11822, 23387, 34181, 39767, 41377, 46774, 63479, 68362, 76843, 79534, 82754, 112309, 126958, 153686, 224618, 444353, 537901, 786163, 888706, 1075802, 1460017, 1572326, 2920034, 10220119, 20440238]

約数ペア:

[(1, 20440238), (2, 10220119), (7, 2920034), (13, 1572326), (14, 1460017), (19, 1075802), (23, 888706), (26, 786163), (38, 537901), (46, 444353), (91, 224618), (133, 153686), (161, 126958), (182, 112309), (247, 82754), (257, 79534), (266, 76843), (299, 68362), (322, 63479), (437, 46774), (494, 41377), (514, 39767), (598, 34181), (874, 23387), (1729, 11822), (1799, 11362), (2093, 9766), (3059, 6682), (3341, 6118), (3458, 5911), (3598, 5681), (4186, 4883)]