638763729

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1\times {\mathrm{1427}}^1$

素因数の和:1645

約数の個数: 32

約数和(自身を含む): 922876416

約数和(自身を除く): 284112687

約数列:

[1, 3, 17, 51, 67, 131, 201, 393, 1139, 1427, 2227, 3417, 4281, 6681, 8777, 24259, 26331, 72777, 95609, 149209, 186937, 286827, 447627, 560811, 1625353, 3177929, 4876059, 9533787, 12524779, 37574337, 212921243, 638763729]

約数ペア:

[(1, 638763729), (3, 212921243), (17, 37574337), (51, 12524779), (67, 9533787), (131, 4876059), (201, 3177929), (393, 1625353), (1139, 560811), (1427, 447627), (2227, 286827), (3417, 186937), (4281, 149209), (6681, 95609), (8777, 72777), (24259, 26331)]