20805480

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{57793}}^1$

素因数の和:57810

約数の個数: 48

約数和(自身を含む): 67618980

約数和(自身を除く): 46813500

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, 57793, 115586, 173379, 231172, 288965, 346758, 462344, 520137, 577930, 693516, 866895, 1040274, 1155860, 1387032, 1733790, 2080548, 2311720, 2600685, 3467580, 4161096, 5201370, 6935160, 10402740, 20805480]

約数ペア:

[(1, 20805480), (2, 10402740), (3, 6935160), (4, 5201370), (5, 4161096), (6, 3467580), (8, 2600685), (9, 2311720), (10, 2080548), (12, 1733790), (15, 1387032), (18, 1155860), (20, 1040274), (24, 866895), (30, 693516), (36, 577930), (40, 520137), (45, 462344), (60, 346758), (72, 288965), (90, 231172), (120, 173379), (180, 115586), (360, 57793)]