21158608

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{727}}^1$

素因数の和:859

約数の個数: 40

約数和(自身を含む): 43872192

約数和(自身を除く): 22713584

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 107, 136, 214, 272, 428, 727, 856, 1454, 1712, 1819, 2908, 3638, 5816, 7276, 11632, 12359, 14552, 24718, 29104, 49436, 77789, 98872, 155578, 197744, 311156, 622312, 1244624, 1322413, 2644826, 5289652, 10579304, 21158608]

約数ペア:

[(1, 21158608), (2, 10579304), (4, 5289652), (8, 2644826), (16, 1322413), (17, 1244624), (34, 622312), (68, 311156), (107, 197744), (136, 155578), (214, 98872), (272, 77789), (428, 49436), (727, 29104), (856, 24718), (1454, 14552), (1712, 12359), (1819, 11632), (2908, 7276), (3638, 5816)]