21628304

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{241}}^1$

素因数の和:399

約数の個数: 40

約数和(自身を含む): 43211520

約数和(自身を除く): 21583216

約数列:

[1, 2, 4, 8, 16, 71, 79, 142, 158, 241, 284, 316, 482, 568, 632, 964, 1136, 1264, 1928, 3856, 5609, 11218, 17111, 19039, 22436, 34222, 38078, 44872, 68444, 76156, 89744, 136888, 152312, 273776, 304624, 1351769, 2703538, 5407076, 10814152, 21628304]

約数ペア:

[(1, 21628304), (2, 10814152), (4, 5407076), (8, 2703538), (16, 1351769), (71, 304624), (79, 273776), (142, 152312), (158, 136888), (241, 89744), (284, 76156), (316, 68444), (482, 44872), (568, 38078), (632, 34222), (964, 22436), (1136, 19039), (1264, 17111), (1928, 11218), (3856, 5609)]