21157140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{352619}}^1$

素因数の和:352631

約数の個数: 24

約数和(自身を含む): 59240160

約数和(自身を除く): 38083020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 352619, 705238, 1057857, 1410476, 1763095, 2115714, 3526190, 4231428, 5289285, 7052380, 10578570, 21157140]

約数ペア:

[(1, 21157140), (2, 10578570), (3, 7052380), (4, 5289285), (5, 4231428), (6, 3526190), (10, 2115714), (12, 1763095), (15, 1410476), (20, 1057857), (30, 705238), (60, 352619)]