78572180

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{211}}^1\times {\mathrm{433}}^1$

素因数の和:696

約数の個数: 48

約数和(自身を含む): 170030784

約数和(自身を除く): 91458604

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 211, 215, 422, 430, 433, 844, 860, 866, 1055, 1732, 2110, 2165, 4220, 4330, 8660, 9073, 18146, 18619, 36292, 37238, 45365, 74476, 90730, 91363, 93095, 181460, 182726, 186190, 365452, 372380, 456815, 913630, 1827260, 3928609, 7857218, 15714436, 19643045, 39286090, 78572180]

約数ペア:

[(1, 78572180), (2, 39286090), (4, 19643045), (5, 15714436), (10, 7857218), (20, 3928609), (43, 1827260), (86, 913630), (172, 456815), (211, 372380), (215, 365452), (422, 186190), (430, 182726), (433, 181460), (844, 93095), (860, 91363), (866, 90730), (1055, 74476), (1732, 45365), (2110, 37238), (2165, 36292), (4220, 18619), (4330, 18146), (8660, 9073)]