80852980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{1259}}^1$

素因数の和:1313

約数の個数: 72

約数和(自身を含む): 193687200

約数和(自身を除く): 112834220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 169, 190, 247, 260, 338, 380, 494, 676, 845, 988, 1235, 1259, 1690, 2470, 2518, 3211, 3380, 4940, 5036, 6295, 6422, 12590, 12844, 16055, 16367, 23921, 25180, 32110, 32734, 47842, 64220, 65468, 81835, 95684, 119605, 163670, 212771, 239210, 310973, 327340, 425542, 478420, 621946, 851084, 1063855, 1243892, 1554865, 2127710, 3109730, 4042649, 4255420, 6219460, 8085298, 16170596, 20213245, 40426490, 80852980]

約数ペア:

[(1, 80852980), (2, 40426490), (4, 20213245), (5, 16170596), (10, 8085298), (13, 6219460), (19, 4255420), (20, 4042649), (26, 3109730), (38, 2127710), (52, 1554865), (65, 1243892), (76, 1063855), (95, 851084), (130, 621946), (169, 478420), (190, 425542), (247, 327340), (260, 310973), (338, 239210), (380, 212771), (494, 163670), (676, 119605), (845, 95684), (988, 81835), (1235, 65468), (1259, 64220), (1690, 47842), (2470, 32734), (2518, 32110), (3211, 25180), (3380, 23921), (4940, 16367), (5036, 16055), (6295, 12844), (6422, 12590)]