211893465

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{661}}^1$

素因数の和:790

約数の個数: 64

約数和(自身を含む): 402665472

約数和(自身を除く): 190772007

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 71, 105, 129, 213, 215, 301, 355, 497, 645, 661, 903, 1065, 1491, 1505, 1983, 2485, 3053, 3305, 4515, 4627, 7455, 9159, 9915, 13881, 15265, 21371, 23135, 28423, 45795, 46931, 64113, 69405, 85269, 106855, 140793, 142115, 198961, 234655, 320565, 328517, 426345, 596883, 703965, 985551, 994805, 1642585, 2018033, 2984415, 4927755, 6054099, 10090165, 14126231, 30270495, 42378693, 70631155, 211893465]

約数ペア:

[(1, 211893465), (3, 70631155), (5, 42378693), (7, 30270495), (15, 14126231), (21, 10090165), (35, 6054099), (43, 4927755), (71, 2984415), (105, 2018033), (129, 1642585), (213, 994805), (215, 985551), (301, 703965), (355, 596883), (497, 426345), (645, 328517), (661, 320565), (903, 234655), (1065, 198961), (1491, 142115), (1505, 140793), (1983, 106855), (2485, 85269), (3053, 69405), (3305, 64113), (4515, 46931), (4627, 45795), (7455, 28423), (9159, 23135), (9915, 21371), (13881, 15265)]