21000340836

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{223}}^1\times {\mathrm{90203}}^1$

素因数の和:90465

約数の個数: 72

約数和(自身を含む): 55161550080

約数和(自身を除く): 34161209244

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 87, 116, 174, 223, 261, 348, 446, 522, 669, 892, 1044, 1338, 2007, 2676, 4014, 6467, 8028, 12934, 19401, 25868, 38802, 58203, 77604, 90203, 116406, 180406, 232812, 270609, 360812, 541218, 811827, 1082436, 1623654, 2615887, 3247308, 5231774, 7847661, 10463548, 15695322, 20115269, 23542983, 31390644, 40230538, 47085966, 60345807, 80461076, 94171932, 120691614, 181037421, 241383228, 362074842, 583342801, 724149684, 1166685602, 1750028403, 2333371204, 3500056806, 5250085209, 7000113612, 10500170418, 21000340836]

約数ペア:

[(1, 21000340836), (2, 10500170418), (3, 7000113612), (4, 5250085209), (6, 3500056806), (9, 2333371204), (12, 1750028403), (18, 1166685602), (29, 724149684), (36, 583342801), (58, 362074842), (87, 241383228), (116, 181037421), (174, 120691614), (223, 94171932), (261, 80461076), (348, 60345807), (446, 47085966), (522, 40230538), (669, 31390644), (892, 23542983), (1044, 20115269), (1338, 15695322), (2007, 10463548), (2676, 7847661), (4014, 5231774), (6467, 3247308), (8028, 2615887), (12934, 1623654), (19401, 1082436), (25868, 811827), (38802, 541218), (58203, 360812), (77604, 270609), (90203, 232812), (116406, 180406)]