19864980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{36787}}^1$

素因数の和:36805

約数の個数: 48

約数和(自身を含む): 61803840

約数和(自身を除く): 41938860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 36787, 73574, 110361, 147148, 183935, 220722, 331083, 367870, 441444, 551805, 662166, 735740, 993249, 1103610, 1324332, 1655415, 1986498, 2207220, 3310830, 3972996, 4966245, 6621660, 9932490, 19864980]

約数ペア:

[(1, 19864980), (2, 9932490), (3, 6621660), (4, 4966245), (5, 3972996), (6, 3310830), (9, 2207220), (10, 1986498), (12, 1655415), (15, 1324332), (18, 1103610), (20, 993249), (27, 735740), (30, 662166), (36, 551805), (45, 441444), (54, 367870), (60, 331083), (90, 220722), (108, 183935), (135, 147148), (180, 110361), (270, 73574), (540, 36787)]