21000724836

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1479341}}^1$

素因数の和:1479381

約数の個数: 72

約数和(自身を含む): 60641187264

約数和(自身を除く): 39640462428

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 52, 78, 84, 91, 156, 169, 182, 273, 338, 364, 507, 546, 676, 1014, 1092, 1183, 2028, 2366, 3549, 4732, 7098, 14196, 1479341, 2958682, 4438023, 5917364, 8876046, 10355387, 17752092, 19231433, 20710774, 31066161, 38462866, 41421548, 57694299, 62132322, 76925732, 115388598, 124264644, 134620031, 230777196, 250008629, 269240062, 403860093, 500017258, 538480124, 750025887, 807720186, 1000034516, 1500051774, 1615440372, 1750060403, 3000103548, 3500120806, 5250181209, 7000241612, 10500362418, 21000724836]

約数ペア:

[(1, 21000724836), (2, 10500362418), (3, 7000241612), (4, 5250181209), (6, 3500120806), (7, 3000103548), (12, 1750060403), (13, 1615440372), (14, 1500051774), (21, 1000034516), (26, 807720186), (28, 750025887), (39, 538480124), (42, 500017258), (52, 403860093), (78, 269240062), (84, 250008629), (91, 230777196), (156, 134620031), (169, 124264644), (182, 115388598), (273, 76925732), (338, 62132322), (364, 57694299), (507, 41421548), (546, 38462866), (676, 31066161), (1014, 20710774), (1092, 19231433), (1183, 17752092), (2028, 10355387), (2366, 8876046), (3549, 5917364), (4732, 4438023), (7098, 2958682), (14196, 1479341)]