20720520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{57557}}^1$

素因数の和:57574

約数の個数: 48

約数和(自身を含む): 67342860

約数和(自身を除く): 46622340

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 57557, 115114, 172671, 230228, 287785, 345342, 460456, 518013, 575570, 690684, 863355, 1036026, 1151140, 1381368, 1726710, 2072052, 2302280, 2590065, 3453420, 4144104, 5180130, 6906840, 10360260, 20720520]

約数ペア:

[(1, 20720520), (2, 10360260), (3, 6906840), (4, 5180130), (5, 4144104), (6, 3453420), (8, 2590065), (9, 2302280), (10, 2072052), (12, 1726710), (15, 1381368), (18, 1151140), (20, 1036026), (24, 863355), (30, 690684), (36, 575570), (40, 518013), (45, 460456), (60, 345342), (72, 287785), (90, 230228), (120, 172671), (180, 115114), (360, 57557)]