21416996900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{82787}}^1$

素因数の和:83013

約数の個数: 72

約数和(自身を含む): 50301988800

約数和(自身を除く): 28884991900

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 199, 260, 325, 398, 650, 796, 995, 1300, 1990, 2587, 3980, 4975, 5174, 9950, 10348, 12935, 19900, 25870, 51740, 64675, 82787, 129350, 165574, 258700, 331148, 413935, 827870, 1076231, 1655740, 2069675, 2152462, 4139350, 4304924, 5381155, 8278700, 10762310, 16474613, 21524620, 26905775, 32949226, 53811550, 65898452, 82373065, 107623100, 164746130, 214169969, 329492260, 411865325, 428339938, 823730650, 856679876, 1070849845, 1647461300, 2141699690, 4283399380, 5354249225, 10708498450, 21416996900]

約数ペア:

[(1, 21416996900), (2, 10708498450), (4, 5354249225), (5, 4283399380), (10, 2141699690), (13, 1647461300), (20, 1070849845), (25, 856679876), (26, 823730650), (50, 428339938), (52, 411865325), (65, 329492260), (100, 214169969), (130, 164746130), (199, 107623100), (260, 82373065), (325, 65898452), (398, 53811550), (650, 32949226), (796, 26905775), (995, 21524620), (1300, 16474613), (1990, 10762310), (2587, 8278700), (3980, 5381155), (4975, 4304924), (5174, 4139350), (9950, 2152462), (10348, 2069675), (12935, 1655740), (19900, 1076231), (25870, 827870), (51740, 413935), (64675, 331148), (82787, 258700), (129350, 165574)]