18657380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1877}}^1$

素因数の和:1964

約数の個数: 48

約数和(自身を含む): 45432576

約数和(自身を除く): 26775196

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1877, 1988, 2485, 3754, 4970, 7508, 9385, 9940, 13139, 18770, 26278, 37540, 52556, 65695, 131390, 133267, 262780, 266534, 533068, 666335, 932869, 1332670, 1865738, 2665340, 3731476, 4664345, 9328690, 18657380]

約数ペア:

[(1, 18657380), (2, 9328690), (4, 4664345), (5, 3731476), (7, 2665340), (10, 1865738), (14, 1332670), (20, 932869), (28, 666335), (35, 533068), (70, 266534), (71, 262780), (140, 133267), (142, 131390), (284, 65695), (355, 52556), (497, 37540), (710, 26278), (994, 18770), (1420, 13139), (1877, 9940), (1988, 9385), (2485, 7508), (3754, 4970)]