12780821960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{93949}}^1$

素因数の和:94158

約数の個数: 64

約数和(自身を含む): 30439800000

約数和(自身を除く): 17658978040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 179, 190, 358, 380, 716, 760, 895, 1432, 1790, 3401, 3580, 6802, 7160, 13604, 17005, 27208, 34010, 68020, 93949, 136040, 187898, 375796, 469745, 751592, 939490, 1785031, 1878980, 3570062, 3757960, 7140124, 8925155, 14280248, 16816871, 17850310, 33633742, 35700620, 67267484, 71401240, 84084355, 134534968, 168168710, 319520549, 336337420, 639041098, 672674840, 1278082196, 1597602745, 2556164392, 3195205490, 6390410980, 12780821960]

約数ペア:

[(1, 12780821960), (2, 6390410980), (4, 3195205490), (5, 2556164392), (8, 1597602745), (10, 1278082196), (19, 672674840), (20, 639041098), (38, 336337420), (40, 319520549), (76, 168168710), (95, 134534968), (152, 84084355), (179, 71401240), (190, 67267484), (358, 35700620), (380, 33633742), (716, 17850310), (760, 16816871), (895, 14280248), (1432, 8925155), (1790, 7140124), (3401, 3757960), (3580, 3570062), (6802, 1878980), (7160, 1785031), (13604, 939490), (17005, 751592), (27208, 469745), (34010, 375796), (68020, 187898), (93949, 136040)]