21140840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75503}}^1$

素因数の和:75521

約数の個数: 32

約数和(自身を含む): 54362880

約数和(自身を除く): 33222040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75503, 151006, 302012, 377515, 528521, 604024, 755030, 1057042, 1510060, 2114084, 2642605, 3020120, 4228168, 5285210, 10570420, 21140840]

約数ペア:

[(1, 21140840), (2, 10570420), (4, 5285210), (5, 4228168), (7, 3020120), (8, 2642605), (10, 2114084), (14, 1510060), (20, 1057042), (28, 755030), (35, 604024), (40, 528521), (56, 377515), (70, 302012), (140, 151006), (280, 75503)]