21539344

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{761}}^1$

素因数の和:859

約数の個数: 40

約数和(自身を含む): 43936920

約数和(自身を除く): 22397576

約数列:

[1, 2, 4, 8, 16, 29, 58, 61, 116, 122, 232, 244, 464, 488, 761, 976, 1522, 1769, 3044, 3538, 6088, 7076, 12176, 14152, 22069, 28304, 44138, 46421, 88276, 92842, 176552, 185684, 353104, 371368, 742736, 1346209, 2692418, 5384836, 10769672, 21539344]

約数ペア:

[(1, 21539344), (2, 10769672), (4, 5384836), (8, 2692418), (16, 1346209), (29, 742736), (58, 371368), (61, 353104), (116, 185684), (122, 176552), (232, 92842), (244, 88276), (464, 46421), (488, 44138), (761, 28304), (976, 22069), (1522, 14152), (1769, 12176), (3044, 7076), (3538, 6088)]