21511210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{431}}^1$

素因数の和:499

約数の個数: 64

約数和(自身を含む): 47775744

約数和(自身を除く): 26264534

約数列:

[1, 2, 5, 7, 10, 14, 23, 31, 35, 46, 62, 70, 115, 155, 161, 217, 230, 310, 322, 431, 434, 713, 805, 862, 1085, 1426, 1610, 2155, 2170, 3017, 3565, 4310, 4991, 6034, 7130, 9913, 9982, 13361, 15085, 19826, 24955, 26722, 30170, 49565, 49910, 66805, 69391, 93527, 99130, 133610, 138782, 187054, 307303, 346955, 467635, 614606, 693910, 935270, 1536515, 2151121, 3073030, 4302242, 10755605, 21511210]

約数ペア:

[(1, 21511210), (2, 10755605), (5, 4302242), (7, 3073030), (10, 2151121), (14, 1536515), (23, 935270), (31, 693910), (35, 614606), (46, 467635), (62, 346955), (70, 307303), (115, 187054), (155, 138782), (161, 133610), (217, 99130), (230, 93527), (310, 69391), (322, 66805), (431, 49910), (434, 49565), (713, 30170), (805, 26722), (862, 24955), (1085, 19826), (1426, 15085), (1610, 13361), (2155, 9982), (2170, 9913), (3017, 7130), (3565, 6034), (4310, 4991)]