20023739260

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{304961}}^1$

素因数の和:305051

約数の個数: 72

約数和(自身を含む): 49645373904

約数和(自身を除く): 29621634644

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 67, 70, 98, 134, 140, 196, 245, 268, 335, 469, 490, 670, 938, 980, 1340, 1876, 2345, 3283, 4690, 6566, 9380, 13132, 16415, 32830, 65660, 304961, 609922, 1219844, 1524805, 2134727, 3049610, 4269454, 6099220, 8538908, 10673635, 14943089, 20432387, 21347270, 29886178, 40864774, 42694540, 59772356, 74715445, 81729548, 102161935, 143026709, 149430890, 204323870, 286053418, 298861780, 408647740, 572106836, 715133545, 1001186963, 1430267090, 2002373926, 2860534180, 4004747852, 5005934815, 10011869630, 20023739260]

約数ペア:

[(1, 20023739260), (2, 10011869630), (4, 5005934815), (5, 4004747852), (7, 2860534180), (10, 2002373926), (14, 1430267090), (20, 1001186963), (28, 715133545), (35, 572106836), (49, 408647740), (67, 298861780), (70, 286053418), (98, 204323870), (134, 149430890), (140, 143026709), (196, 102161935), (245, 81729548), (268, 74715445), (335, 59772356), (469, 42694540), (490, 40864774), (670, 29886178), (938, 21347270), (980, 20432387), (1340, 14943089), (1876, 10673635), (2345, 8538908), (3283, 6099220), (4690, 4269454), (6566, 3049610), (9380, 2134727), (13132, 1524805), (16415, 1219844), (32830, 609922), (65660, 304961)]