21283380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{373}}^1$

素因数の和:705

約数の個数: 72

約数和(自身を含む): 64936872

約数和(自身を除く): 43653492

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 317, 373, 634, 746, 951, 1119, 1268, 1492, 1585, 1865, 1902, 2238, 2853, 3170, 3357, 3730, 3804, 4476, 4755, 5595, 5706, 6340, 6714, 7460, 9510, 11190, 11412, 13428, 14265, 16785, 19020, 22380, 28530, 33570, 57060, 67140, 118241, 236482, 354723, 472964, 591205, 709446, 1064169, 1182410, 1418892, 1773615, 2128338, 2364820, 3547230, 4256676, 5320845, 7094460, 10641690, 21283380]

約数ペア:

[(1, 21283380), (2, 10641690), (3, 7094460), (4, 5320845), (5, 4256676), (6, 3547230), (9, 2364820), (10, 2128338), (12, 1773615), (15, 1418892), (18, 1182410), (20, 1064169), (30, 709446), (36, 591205), (45, 472964), (60, 354723), (90, 236482), (180, 118241), (317, 67140), (373, 57060), (634, 33570), (746, 28530), (951, 22380), (1119, 19020), (1268, 16785), (1492, 14265), (1585, 13428), (1865, 11412), (1902, 11190), (2238, 9510), (2853, 7460), (3170, 6714), (3357, 6340), (3730, 5706), (3804, 5595), (4476, 4755)]