21364444

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 41489280

約数和(自身を除く): 20124836

約数列:

[1, 2, 4, 17, 34, 41, 68, 79, 82, 97, 158, 164, 194, 316, 388, 697, 1343, 1394, 1649, 2686, 2788, 3239, 3298, 3977, 5372, 6478, 6596, 7663, 7954, 12956, 15326, 15908, 30652, 55063, 67609, 110126, 130271, 135218, 220252, 260542, 270436, 314183, 521084, 628366, 1256732, 5341111, 10682222, 21364444]

約数ペア:

[(1, 21364444), (2, 10682222), (4, 5341111), (17, 1256732), (34, 628366), (41, 521084), (68, 314183), (79, 270436), (82, 260542), (97, 220252), (158, 135218), (164, 130271), (194, 110126), (316, 67609), (388, 55063), (697, 30652), (1343, 15908), (1394, 15326), (1649, 12956), (2686, 7954), (2788, 7663), (3239, 6596), (3298, 6478), (3977, 5372)]