20798760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{353}}^1\times {\mathrm{491}}^1$

素因数の和:858

約数の個数: 64

約数和(自身を含む): 62700480

約数和(自身を除く): 41901720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 353, 491, 706, 982, 1059, 1412, 1473, 1765, 1964, 2118, 2455, 2824, 2946, 3530, 3928, 4236, 4910, 5295, 5892, 7060, 7365, 8472, 9820, 10590, 11784, 14120, 14730, 19640, 21180, 29460, 42360, 58920, 173323, 346646, 519969, 693292, 866615, 1039938, 1386584, 1733230, 2079876, 2599845, 3466460, 4159752, 5199690, 6932920, 10399380, 20798760]

約数ペア:

[(1, 20798760), (2, 10399380), (3, 6932920), (4, 5199690), (5, 4159752), (6, 3466460), (8, 2599845), (10, 2079876), (12, 1733230), (15, 1386584), (20, 1039938), (24, 866615), (30, 693292), (40, 519969), (60, 346646), (120, 173323), (353, 58920), (491, 42360), (706, 29460), (982, 21180), (1059, 19640), (1412, 14730), (1473, 14120), (1765, 11784), (1964, 10590), (2118, 9820), (2455, 8472), (2824, 7365), (2946, 7060), (3530, 5892), (3928, 5295), (4236, 4910)]