66777520

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{20359}}^1$

素因数の和:20413

約数の個数: 40

約数和(自身を含む): 159052320

約数和(自身を除く): 92274800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 20359, 40718, 81436, 101795, 162872, 203590, 325744, 407180, 814360, 834719, 1628720, 1669438, 3338876, 4173595, 6677752, 8347190, 13355504, 16694380, 33388760, 66777520]

約数ペア:

[(1, 66777520), (2, 33388760), (4, 16694380), (5, 13355504), (8, 8347190), (10, 6677752), (16, 4173595), (20, 3338876), (40, 1669438), (41, 1628720), (80, 834719), (82, 814360), (164, 407180), (205, 325744), (328, 203590), (410, 162872), (656, 101795), (820, 81436), (1640, 40718), (3280, 20359)]