78919720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{2161}}^1$

素因数の和:2266

約数の個数: 64

約数和(自身を含む): 196136640

約数和(自身を除く): 117216920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 83, 88, 110, 166, 220, 332, 415, 440, 664, 830, 913, 1660, 1826, 2161, 3320, 3652, 4322, 4565, 7304, 8644, 9130, 10805, 17288, 18260, 21610, 23771, 36520, 43220, 47542, 86440, 95084, 118855, 179363, 190168, 237710, 358726, 475420, 717452, 896815, 950840, 1434904, 1793630, 1972993, 3587260, 3945986, 7174520, 7891972, 9864965, 15783944, 19729930, 39459860, 78919720]

約数ペア:

[(1, 78919720), (2, 39459860), (4, 19729930), (5, 15783944), (8, 9864965), (10, 7891972), (11, 7174520), (20, 3945986), (22, 3587260), (40, 1972993), (44, 1793630), (55, 1434904), (83, 950840), (88, 896815), (110, 717452), (166, 475420), (220, 358726), (332, 237710), (415, 190168), (440, 179363), (664, 118855), (830, 95084), (913, 86440), (1660, 47542), (1826, 43220), (2161, 36520), (3320, 23771), (3652, 21610), (4322, 18260), (4565, 17288), (7304, 10805), (8644, 9130)]