21906840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{311}}^1\times {\mathrm{587}}^1$

素因数の和:912

約数の個数: 64

約数和(自身を含む): 66044160

約数和(自身を除く): 44137320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 311, 587, 622, 933, 1174, 1244, 1555, 1761, 1866, 2348, 2488, 2935, 3110, 3522, 3732, 4665, 4696, 5870, 6220, 7044, 7464, 8805, 9330, 11740, 12440, 14088, 17610, 18660, 23480, 35220, 37320, 70440, 182557, 365114, 547671, 730228, 912785, 1095342, 1460456, 1825570, 2190684, 2738355, 3651140, 4381368, 5476710, 7302280, 10953420, 21906840]

約数ペア:

[(1, 21906840), (2, 10953420), (3, 7302280), (4, 5476710), (5, 4381368), (6, 3651140), (8, 2738355), (10, 2190684), (12, 1825570), (15, 1460456), (20, 1095342), (24, 912785), (30, 730228), (40, 547671), (60, 365114), (120, 182557), (311, 70440), (587, 37320), (622, 35220), (933, 23480), (1174, 18660), (1244, 17610), (1555, 14088), (1761, 12440), (1866, 11740), (2348, 9330), (2488, 8805), (2935, 7464), (3110, 7044), (3522, 6220), (3732, 5870), (4665, 4696)]