20501990

素因数分解:

$2^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{383}}^1$

素因数の和:544

約数の個数: 32

約数和(自身を含む): 38071296

約数和(自身を除く): 17569306

約数列:

[1, 2, 5, 10, 53, 101, 106, 202, 265, 383, 505, 530, 766, 1010, 1915, 3830, 5353, 10706, 20299, 26765, 38683, 40598, 53530, 77366, 101495, 193415, 202990, 386830, 2050199, 4100398, 10250995, 20501990]

約数ペア:

[(1, 20501990), (2, 10250995), (5, 4100398), (10, 2050199), (53, 386830), (101, 202990), (106, 193415), (202, 101495), (265, 77366), (383, 53530), (505, 40598), (530, 38683), (766, 26765), (1010, 20299), (1915, 10706), (3830, 5353)]