21312424

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{367}}^1$

素因数の和:458

約数の個数: 64

約数和(自身を含む): 49282560

約数和(自身を除く): 27970136

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 61, 68, 119, 122, 136, 238, 244, 367, 427, 476, 488, 734, 854, 952, 1037, 1468, 1708, 2074, 2569, 2936, 3416, 4148, 5138, 6239, 7259, 8296, 10276, 12478, 14518, 20552, 22387, 24956, 29036, 43673, 44774, 49912, 58072, 87346, 89548, 156709, 174692, 179096, 313418, 349384, 380579, 626836, 761158, 1253672, 1522316, 2664053, 3044632, 5328106, 10656212, 21312424]

約数ペア:

[(1, 21312424), (2, 10656212), (4, 5328106), (7, 3044632), (8, 2664053), (14, 1522316), (17, 1253672), (28, 761158), (34, 626836), (56, 380579), (61, 349384), (68, 313418), (119, 179096), (122, 174692), (136, 156709), (238, 89548), (244, 87346), (367, 58072), (427, 49912), (476, 44774), (488, 43673), (734, 29036), (854, 24956), (952, 22387), (1037, 20552), (1468, 14518), (1708, 12478), (2074, 10276), (2569, 8296), (2936, 7259), (3416, 6239), (4148, 5138)]