20655480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4003}}^1$

素因数の和:4060

約数の個数: 64

約数和(自身を含む): 63423360

約数和(自身を除く): 42767880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 4003, 5160, 8006, 12009, 16012, 20015, 24018, 32024, 40030, 48036, 60045, 80060, 96072, 120090, 160120, 172129, 240180, 344258, 480360, 516387, 688516, 860645, 1032774, 1377032, 1721290, 2065548, 2581935, 3442580, 4131096, 5163870, 6885160, 10327740, 20655480]

約数ペア:

[(1, 20655480), (2, 10327740), (3, 6885160), (4, 5163870), (5, 4131096), (6, 3442580), (8, 2581935), (10, 2065548), (12, 1721290), (15, 1377032), (20, 1032774), (24, 860645), (30, 688516), (40, 516387), (43, 480360), (60, 344258), (86, 240180), (120, 172129), (129, 160120), (172, 120090), (215, 96072), (258, 80060), (344, 60045), (430, 48036), (516, 40030), (645, 32024), (860, 24018), (1032, 20015), (1290, 16012), (1720, 12009), (2580, 8006), (4003, 5160)]