18739871

素因数分解:

${\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:159

約数の個数: 24

約数和(自身を含む): 21543264

約数和(自身を除く): 2803393

約数列:

[1, 19, 23, 37, 61, 361, 437, 703, 851, 1159, 1403, 2257, 8303, 13357, 16169, 22021, 26657, 42883, 51911, 307211, 506483, 814777, 986309, 18739871]

約数ペア:

[(1, 18739871), (19, 986309), (23, 814777), (37, 506483), (61, 307211), (361, 51911), (437, 42883), (703, 26657), (851, 22021), (1159, 16169), (1403, 13357), (2257, 8303)]