18807860

素因数分解:

$2^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{1427}}^1$

素因数の和:2095

約数の個数: 24

約数和(自身を含む): 39584160

約数和(自身を除く): 20776300

約数列:

[1, 2, 4, 5, 10, 20, 659, 1318, 1427, 2636, 2854, 3295, 5708, 6590, 7135, 13180, 14270, 28540, 940393, 1880786, 3761572, 4701965, 9403930, 18807860]

約数ペア:

[(1, 18807860), (2, 9403930), (4, 4701965), (5, 3761572), (10, 1880786), (20, 940393), (659, 28540), (1318, 14270), (1427, 13180), (2636, 7135), (2854, 6590), (3295, 5708)]