18195170

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{523}}^1$

素因数の和:615

約数の個数: 48

約数和(自身を含む): 38708928

約数和(自身を除く): 20513758

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 71, 98, 142, 245, 355, 490, 497, 523, 710, 994, 1046, 2485, 2615, 3479, 3661, 4970, 5230, 6958, 7322, 17395, 18305, 25627, 34790, 36610, 37133, 51254, 74266, 128135, 185665, 256270, 259931, 371330, 519862, 1299655, 1819517, 2599310, 3639034, 9097585, 18195170]

約数ペア:

[(1, 18195170), (2, 9097585), (5, 3639034), (7, 2599310), (10, 1819517), (14, 1299655), (35, 519862), (49, 371330), (70, 259931), (71, 256270), (98, 185665), (142, 128135), (245, 74266), (355, 51254), (490, 37133), (497, 36610), (523, 34790), (710, 25627), (994, 18305), (1046, 17395), (2485, 7322), (2615, 6958), (3479, 5230), (3661, 4970)]