81860740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:341

約数の個数: 96

約数和(自身を含む): 198414720

約数和(自身を除く): 116553980

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 73, 76, 95, 130, 146, 190, 227, 247, 260, 292, 365, 380, 454, 494, 730, 908, 949, 988, 1135, 1235, 1387, 1460, 1898, 2270, 2470, 2774, 2951, 3796, 4313, 4540, 4745, 4940, 5548, 5902, 6935, 8626, 9490, 11804, 13870, 14755, 16571, 17252, 18031, 18980, 21565, 27740, 29510, 33142, 36062, 43130, 56069, 59020, 66284, 72124, 82855, 86260, 90155, 112138, 165710, 180310, 215423, 224276, 280345, 314849, 331420, 360620, 430846, 560690, 629698, 861692, 1077115, 1121380, 1259396, 1574245, 2154230, 3148490, 4093037, 4308460, 6296980, 8186074, 16372148, 20465185, 40930370, 81860740]

約数ペア:

[(1, 81860740), (2, 40930370), (4, 20465185), (5, 16372148), (10, 8186074), (13, 6296980), (19, 4308460), (20, 4093037), (26, 3148490), (38, 2154230), (52, 1574245), (65, 1259396), (73, 1121380), (76, 1077115), (95, 861692), (130, 629698), (146, 560690), (190, 430846), (227, 360620), (247, 331420), (260, 314849), (292, 280345), (365, 224276), (380, 215423), (454, 180310), (494, 165710), (730, 112138), (908, 90155), (949, 86260), (988, 82855), (1135, 72124), (1235, 66284), (1387, 59020), (1460, 56069), (1898, 43130), (2270, 36062), (2470, 33142), (2774, 29510), (2951, 27740), (3796, 21565), (4313, 18980), (4540, 18031), (4745, 17252), (4940, 16571), (5548, 14755), (5902, 13870), (6935, 11804), (8626, 9490)]