21217390280

素因数分解:

$2^3\times 5^1\times {\mathrm{530434757}}^1$

素因数の和:530434768

約数の個数: 16

約数和(自身を含む): 47739128220

約数和(自身を除く): 26521737940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 530434757, 1060869514, 2121739028, 2652173785, 4243478056, 5304347570, 10608695140, 21217390280]

約数ペア:

[(1, 21217390280), (2, 10608695140), (4, 5304347570), (5, 4243478056), (8, 2652173785), (10, 2121739028), (20, 1060869514), (40, 530434757)]