20979720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{577}}^1$

素因数の和:695

約数の個数: 96

約数和(自身を含む): 68978520

約数和(自身を除く): 47998800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 101, 120, 180, 202, 303, 360, 404, 505, 577, 606, 808, 909, 1010, 1154, 1212, 1515, 1731, 1818, 2020, 2308, 2424, 2885, 3030, 3462, 3636, 4040, 4545, 4616, 5193, 5770, 6060, 6924, 7272, 8655, 9090, 10386, 11540, 12120, 13848, 17310, 18180, 20772, 23080, 25965, 34620, 36360, 41544, 51930, 58277, 69240, 103860, 116554, 174831, 207720, 233108, 291385, 349662, 466216, 524493, 582770, 699324, 874155, 1048986, 1165540, 1398648, 1748310, 2097972, 2331080, 2622465, 3496620, 4195944, 5244930, 6993240, 10489860, 20979720]

約数ペア:

[(1, 20979720), (2, 10489860), (3, 6993240), (4, 5244930), (5, 4195944), (6, 3496620), (8, 2622465), (9, 2331080), (10, 2097972), (12, 1748310), (15, 1398648), (18, 1165540), (20, 1048986), (24, 874155), (30, 699324), (36, 582770), (40, 524493), (45, 466216), (60, 349662), (72, 291385), (90, 233108), (101, 207720), (120, 174831), (180, 116554), (202, 103860), (303, 69240), (360, 58277), (404, 51930), (505, 41544), (577, 36360), (606, 34620), (808, 25965), (909, 23080), (1010, 20772), (1154, 18180), (1212, 17310), (1515, 13848), (1731, 12120), (1818, 11540), (2020, 10386), (2308, 9090), (2424, 8655), (2885, 7272), (3030, 6924), (3462, 6060), (3636, 5770), (4040, 5193), (4545, 4616)]