18717140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{373}}^1$

素因数の和:588

約数の個数: 48

約数和(自身を含む): 42662928

約数和(自身を除く): 23945788

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 193, 260, 373, 386, 746, 772, 965, 1492, 1865, 1930, 2509, 3730, 3860, 4849, 5018, 7460, 9698, 10036, 12545, 19396, 24245, 25090, 48490, 50180, 71989, 96980, 143978, 287956, 359945, 719890, 935857, 1439780, 1871714, 3743428, 4679285, 9358570, 18717140]

約数ペア:

[(1, 18717140), (2, 9358570), (4, 4679285), (5, 3743428), (10, 1871714), (13, 1439780), (20, 935857), (26, 719890), (52, 359945), (65, 287956), (130, 143978), (193, 96980), (260, 71989), (373, 50180), (386, 48490), (746, 25090), (772, 24245), (965, 19396), (1492, 12545), (1865, 10036), (1930, 9698), (2509, 7460), (3730, 5018), (3860, 4849)]