20045520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2531}}^1$

素因数の和:2561

約数の個数: 120

約数和(自身を含む): 73468512

約数和(自身を除く): 53422992

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 99, 110, 120, 132, 144, 165, 176, 180, 198, 220, 240, 264, 330, 360, 396, 440, 495, 528, 660, 720, 792, 880, 990, 1320, 1584, 1980, 2531, 2640, 3960, 5062, 7593, 7920, 10124, 12655, 15186, 20248, 22779, 25310, 27841, 30372, 37965, 40496, 45558, 50620, 55682, 60744, 75930, 83523, 91116, 101240, 111364, 113895, 121488, 139205, 151860, 167046, 182232, 202480, 222728, 227790, 250569, 278410, 303720, 334092, 364464, 417615, 445456, 455580, 501138, 556820, 607440, 668184, 835230, 911160, 1002276, 1113640, 1252845, 1336368, 1670460, 1822320, 2004552, 2227280, 2505690, 3340920, 4009104, 5011380, 6681840, 10022760, 20045520]

約数ペア:

[(1, 20045520), (2, 10022760), (3, 6681840), (4, 5011380), (5, 4009104), (6, 3340920), (8, 2505690), (9, 2227280), (10, 2004552), (11, 1822320), (12, 1670460), (15, 1336368), (16, 1252845), (18, 1113640), (20, 1002276), (22, 911160), (24, 835230), (30, 668184), (33, 607440), (36, 556820), (40, 501138), (44, 455580), (45, 445456), (48, 417615), (55, 364464), (60, 334092), (66, 303720), (72, 278410), (80, 250569), (88, 227790), (90, 222728), (99, 202480), (110, 182232), (120, 167046), (132, 151860), (144, 139205), (165, 121488), (176, 113895), (180, 111364), (198, 101240), (220, 91116), (240, 83523), (264, 75930), (330, 60744), (360, 55682), (396, 50620), (440, 45558), (495, 40496), (528, 37965), (660, 30372), (720, 27841), (792, 25310), (880, 22779), (990, 20248), (1320, 15186), (1584, 12655), (1980, 10124), (2531, 7920), (2640, 7593), (3960, 5062)]