215820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1$

素因数の和:135

約数の個数: 72

約数和(自身を含む): 720720

約数和(自身を除く): 504900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 109, 110, 132, 165, 180, 198, 218, 220, 327, 330, 396, 436, 495, 545, 654, 660, 981, 990, 1090, 1199, 1308, 1635, 1962, 1980, 2180, 2398, 3270, 3597, 3924, 4796, 4905, 5995, 6540, 7194, 9810, 10791, 11990, 14388, 17985, 19620, 21582, 23980, 35970, 43164, 53955, 71940, 107910, 215820]

約数ペア:

[(1, 215820), (2, 107910), (3, 71940), (4, 53955), (5, 43164), (6, 35970), (9, 23980), (10, 21582), (11, 19620), (12, 17985), (15, 14388), (18, 11990), (20, 10791), (22, 9810), (30, 7194), (33, 6540), (36, 5995), (44, 4905), (45, 4796), (55, 3924), (60, 3597), (66, 3270), (90, 2398), (99, 2180), (109, 1980), (110, 1962), (132, 1635), (165, 1308), (180, 1199), (198, 1090), (218, 990), (220, 981), (327, 660), (330, 654), (396, 545), (436, 495)]