31231278

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2617}}^1$

素因数の和:2658

約数の個数: 64

約数和(自身を含む): 79168320

約数和(自身を除く): 47937042

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 27, 34, 39, 51, 54, 78, 102, 117, 153, 221, 234, 306, 351, 442, 459, 663, 702, 918, 1326, 1989, 2617, 3978, 5234, 5967, 7851, 11934, 15702, 23553, 34021, 44489, 47106, 68042, 70659, 88978, 102063, 133467, 141318, 204126, 266934, 306189, 400401, 578357, 612378, 800802, 918567, 1156714, 1201203, 1735071, 1837134, 2402406, 3470142, 5205213, 10410426, 15615639, 31231278]

約数ペア:

[(1, 31231278), (2, 15615639), (3, 10410426), (6, 5205213), (9, 3470142), (13, 2402406), (17, 1837134), (18, 1735071), (26, 1201203), (27, 1156714), (34, 918567), (39, 800802), (51, 612378), (54, 578357), (78, 400401), (102, 306189), (117, 266934), (153, 204126), (221, 141318), (234, 133467), (306, 102063), (351, 88978), (442, 70659), (459, 68042), (663, 47106), (702, 44489), (918, 34021), (1326, 23553), (1989, 15702), (2617, 11934), (3978, 7851), (5234, 5967)]