21390285

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2017}}^1$

素因数の和:2133

約数の個数: 32

約数和(自身を含む): 39520512

約数和(自身を除く): 18130227

約数列:

[1, 3, 5, 7, 15, 21, 35, 101, 105, 303, 505, 707, 1515, 2017, 2121, 3535, 6051, 10085, 10605, 14119, 30255, 42357, 70595, 203717, 211785, 611151, 1018585, 1426019, 3055755, 4278057, 7130095, 21390285]

約数ペア:

[(1, 21390285), (3, 7130095), (5, 4278057), (7, 3055755), (15, 1426019), (21, 1018585), (35, 611151), (101, 211785), (105, 203717), (303, 70595), (505, 42357), (707, 30255), (1515, 14119), (2017, 10605), (2121, 10085), (3535, 6051)]