18866380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{487}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 43041600

約数和(自身を除く): 24175220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 149, 260, 298, 487, 596, 745, 974, 1490, 1937, 1948, 2435, 2980, 3874, 4870, 6331, 7748, 9685, 9740, 12662, 19370, 25324, 31655, 38740, 63310, 72563, 126620, 145126, 290252, 362815, 725630, 943319, 1451260, 1886638, 3773276, 4716595, 9433190, 18866380]

約数ペア:

[(1, 18866380), (2, 9433190), (4, 4716595), (5, 3773276), (10, 1886638), (13, 1451260), (20, 943319), (26, 725630), (52, 362815), (65, 290252), (130, 145126), (149, 126620), (260, 72563), (298, 63310), (487, 38740), (596, 31655), (745, 25324), (974, 19370), (1490, 12662), (1937, 9740), (1948, 9685), (2435, 7748), (2980, 6331), (3874, 4870)]