21984165

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{691}}^1$

素因数の和:810

約数の個数: 48

約数和(自身を含む): 44044416

約数和(自身を除く): 22060251

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 101, 105, 303, 315, 505, 691, 707, 909, 1515, 2073, 2121, 3455, 3535, 4545, 4837, 6219, 6363, 10365, 10605, 14511, 24185, 31095, 31815, 43533, 69791, 72555, 209373, 217665, 348955, 488537, 628119, 1046865, 1465611, 2442685, 3140595, 4396833, 7328055, 21984165]

約数ペア:

[(1, 21984165), (3, 7328055), (5, 4396833), (7, 3140595), (9, 2442685), (15, 1465611), (21, 1046865), (35, 628119), (45, 488537), (63, 348955), (101, 217665), (105, 209373), (303, 72555), (315, 69791), (505, 43533), (691, 31815), (707, 31095), (909, 24185), (1515, 14511), (2073, 10605), (2121, 10365), (3455, 6363), (3535, 6219), (4545, 4837)]