840909940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{21419}}^1$

素因数の和:21592

約数の個数: 48

約数和(自身を含む): 1914433920

約数和(自身を除く): 1073523980

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 151, 260, 302, 604, 755, 1510, 1963, 3020, 3926, 7852, 9815, 19630, 21419, 39260, 42838, 85676, 107095, 214190, 278447, 428380, 556894, 1113788, 1392235, 2784470, 3234269, 5568940, 6468538, 12937076, 16171345, 32342690, 42045497, 64685380, 84090994, 168181988, 210227485, 420454970, 840909940]

約数ペア:

[(1, 840909940), (2, 420454970), (4, 210227485), (5, 168181988), (10, 84090994), (13, 64685380), (20, 42045497), (26, 32342690), (52, 16171345), (65, 12937076), (130, 6468538), (151, 5568940), (260, 3234269), (302, 2784470), (604, 1392235), (755, 1113788), (1510, 556894), (1963, 428380), (3020, 278447), (3926, 214190), (7852, 107095), (9815, 85676), (19630, 42838), (21419, 39260)]