16149940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 35259840

約数和(自身を除く): 19109900

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 172, 178, 211, 215, 356, 422, 430, 445, 844, 860, 890, 1055, 1780, 2110, 3827, 4220, 7654, 9073, 15308, 18146, 18779, 19135, 36292, 37558, 38270, 45365, 75116, 76540, 90730, 93895, 181460, 187790, 375580, 807497, 1614994, 3229988, 4037485, 8074970, 16149940]

約数ペア:

[(1, 16149940), (2, 8074970), (4, 4037485), (5, 3229988), (10, 1614994), (20, 807497), (43, 375580), (86, 187790), (89, 181460), (172, 93895), (178, 90730), (211, 76540), (215, 75116), (356, 45365), (422, 38270), (430, 37558), (445, 36292), (844, 19135), (860, 18779), (890, 18146), (1055, 15308), (1780, 9073), (2110, 7654), (3827, 4220)]