21411720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{5407}}^1$

素因数の和:5435

約数の個数: 96

約数和(自身を含む): 75928320

約数和(自身を除く): 54516600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 132, 165, 180, 198, 220, 264, 330, 360, 396, 440, 495, 660, 792, 990, 1320, 1980, 3960, 5407, 10814, 16221, 21628, 27035, 32442, 43256, 48663, 54070, 59477, 64884, 81105, 97326, 108140, 118954, 129768, 162210, 178431, 194652, 216280, 237908, 243315, 297385, 324420, 356862, 389304, 475816, 486630, 535293, 594770, 648840, 713724, 892155, 973260, 1070586, 1189540, 1427448, 1784310, 1946520, 2141172, 2379080, 2676465, 3568620, 4282344, 5352930, 7137240, 10705860, 21411720]

約数ペア:

[(1, 21411720), (2, 10705860), (3, 7137240), (4, 5352930), (5, 4282344), (6, 3568620), (8, 2676465), (9, 2379080), (10, 2141172), (11, 1946520), (12, 1784310), (15, 1427448), (18, 1189540), (20, 1070586), (22, 973260), (24, 892155), (30, 713724), (33, 648840), (36, 594770), (40, 535293), (44, 486630), (45, 475816), (55, 389304), (60, 356862), (66, 324420), (72, 297385), (88, 243315), (90, 237908), (99, 216280), (110, 194652), (120, 178431), (132, 162210), (165, 129768), (180, 118954), (198, 108140), (220, 97326), (264, 81105), (330, 64884), (360, 59477), (396, 54070), (440, 48663), (495, 43256), (660, 32442), (792, 27035), (990, 21628), (1320, 16221), (1980, 10814), (3960, 5407)]