21355560

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{433}}^1$

素因数の和:587

約数の個数: 96

約数和(自身を含む): 70073640

約数和(自身を除く): 48718080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 137, 180, 274, 360, 411, 433, 548, 685, 822, 866, 1096, 1233, 1299, 1370, 1644, 1732, 2055, 2165, 2466, 2598, 2740, 3288, 3464, 3897, 4110, 4330, 4932, 5196, 5480, 6165, 6495, 7794, 8220, 8660, 9864, 10392, 12330, 12990, 15588, 16440, 17320, 19485, 24660, 25980, 31176, 38970, 49320, 51960, 59321, 77940, 118642, 155880, 177963, 237284, 296605, 355926, 474568, 533889, 593210, 711852, 889815, 1067778, 1186420, 1423704, 1779630, 2135556, 2372840, 2669445, 3559260, 4271112, 5338890, 7118520, 10677780, 21355560]

約数ペア:

[(1, 21355560), (2, 10677780), (3, 7118520), (4, 5338890), (5, 4271112), (6, 3559260), (8, 2669445), (9, 2372840), (10, 2135556), (12, 1779630), (15, 1423704), (18, 1186420), (20, 1067778), (24, 889815), (30, 711852), (36, 593210), (40, 533889), (45, 474568), (60, 355926), (72, 296605), (90, 237284), (120, 177963), (137, 155880), (180, 118642), (274, 77940), (360, 59321), (411, 51960), (433, 49320), (548, 38970), (685, 31176), (822, 25980), (866, 24660), (1096, 19485), (1233, 17320), (1299, 16440), (1370, 15588), (1644, 12990), (1732, 12330), (2055, 10392), (2165, 9864), (2466, 8660), (2598, 8220), (2740, 7794), (3288, 6495), (3464, 6165), (3897, 5480), (4110, 5196), (4330, 4932)]