19993860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{401}}^1$

素因数の和:693

約数の個数: 72

約数和(自身を含む): 61018776

約数和(自身を除く): 41024916

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 277, 401, 554, 802, 831, 1108, 1203, 1385, 1604, 1662, 2005, 2406, 2493, 2770, 3324, 3609, 4010, 4155, 4812, 4986, 5540, 6015, 7218, 8020, 8310, 9972, 12030, 12465, 14436, 16620, 18045, 24060, 24930, 36090, 49860, 72180, 111077, 222154, 333231, 444308, 555385, 666462, 999693, 1110770, 1332924, 1666155, 1999386, 2221540, 3332310, 3998772, 4998465, 6664620, 9996930, 19993860]

約数ペア:

[(1, 19993860), (2, 9996930), (3, 6664620), (4, 4998465), (5, 3998772), (6, 3332310), (9, 2221540), (10, 1999386), (12, 1666155), (15, 1332924), (18, 1110770), (20, 999693), (30, 666462), (36, 555385), (45, 444308), (60, 333231), (90, 222154), (180, 111077), (277, 72180), (401, 49860), (554, 36090), (802, 24930), (831, 24060), (1108, 18045), (1203, 16620), (1385, 14436), (1604, 12465), (1662, 12030), (2005, 9972), (2406, 8310), (2493, 8020), (2770, 7218), (3324, 6015), (3609, 5540), (4010, 4986), (4155, 4812)]