18394220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{269}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 23518420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 263, 269, 526, 538, 1052, 1076, 1315, 1345, 2630, 2690, 3419, 3497, 5260, 5380, 6838, 6994, 13676, 13988, 17095, 17485, 34190, 34970, 68380, 69940, 70747, 141494, 282988, 353735, 707470, 919711, 1414940, 1839422, 3678844, 4598555, 9197110, 18394220]

約数ペア:

[(1, 18394220), (2, 9197110), (4, 4598555), (5, 3678844), (10, 1839422), (13, 1414940), (20, 919711), (26, 707470), (52, 353735), (65, 282988), (130, 141494), (260, 70747), (263, 69940), (269, 68380), (526, 34970), (538, 34190), (1052, 17485), (1076, 17095), (1315, 13988), (1345, 13676), (2630, 6994), (2690, 6838), (3419, 5380), (3497, 5260)]