20411144

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{487}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 42865920

約数和(自身を除く): 22454776

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 169, 248, 338, 403, 487, 676, 806, 974, 1352, 1612, 1948, 3224, 3896, 5239, 6331, 10478, 12662, 15097, 20956, 25324, 30194, 41912, 50648, 60388, 82303, 120776, 164606, 196261, 329212, 392522, 658424, 785044, 1570088, 2551393, 5102786, 10205572, 20411144]

約数ペア:

[(1, 20411144), (2, 10205572), (4, 5102786), (8, 2551393), (13, 1570088), (26, 785044), (31, 658424), (52, 392522), (62, 329212), (104, 196261), (124, 164606), (169, 120776), (248, 82303), (338, 60388), (403, 50648), (487, 41912), (676, 30194), (806, 25324), (974, 20956), (1352, 15097), (1612, 12662), (1948, 10478), (3224, 6331), (3896, 5239)]