257122940

素因数分解:

$2^2\times 5^1\times {\mathrm{3529}}^1\times {\mathrm{3643}}^1$

素因数の和:7181

約数の個数: 24

約数和(自身を含む): 540259440

約数和(自身を除く): 283136500

約数列:

[1, 2, 4, 5, 10, 20, 3529, 3643, 7058, 7286, 14116, 14572, 17645, 18215, 35290, 36430, 70580, 72860, 12856147, 25712294, 51424588, 64280735, 128561470, 257122940]

約数ペア:

[(1, 257122940), (2, 128561470), (4, 64280735), (5, 51424588), (10, 25712294), (20, 12856147), (3529, 72860), (3643, 70580), (7058, 36430), (7286, 35290), (14116, 18215), (14572, 17645)]