21620900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{461}}^1$

素因数の和:549

約数の個数: 72

約数和(自身を含む): 54538176

約数和(自身を除く): 32917276

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 67, 70, 100, 134, 140, 175, 268, 335, 350, 461, 469, 670, 700, 922, 938, 1340, 1675, 1844, 1876, 2305, 2345, 3227, 3350, 4610, 4690, 6454, 6700, 9220, 9380, 11525, 11725, 12908, 16135, 23050, 23450, 30887, 32270, 46100, 46900, 61774, 64540, 80675, 123548, 154435, 161350, 216209, 308870, 322700, 432418, 617740, 772175, 864836, 1081045, 1544350, 2162090, 3088700, 4324180, 5405225, 10810450, 21620900]

約数ペア:

[(1, 21620900), (2, 10810450), (4, 5405225), (5, 4324180), (7, 3088700), (10, 2162090), (14, 1544350), (20, 1081045), (25, 864836), (28, 772175), (35, 617740), (50, 432418), (67, 322700), (70, 308870), (100, 216209), (134, 161350), (140, 154435), (175, 123548), (268, 80675), (335, 64540), (350, 61774), (461, 46900), (469, 46100), (670, 32270), (700, 30887), (922, 23450), (938, 23050), (1340, 16135), (1675, 12908), (1844, 11725), (1876, 11525), (2305, 9380), (2345, 9220), (3227, 6700), (3350, 6454), (4610, 4690)]