21325260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:511

約数の個数: 96

約数和(自身を含む): 66124800

約数和(自身を除く): 44799540

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 79, 110, 132, 158, 165, 220, 237, 316, 330, 395, 409, 474, 660, 790, 818, 869, 948, 1185, 1227, 1580, 1636, 1738, 2045, 2370, 2454, 2607, 3476, 4090, 4345, 4499, 4740, 4908, 5214, 6135, 8180, 8690, 8998, 10428, 12270, 13035, 13497, 17380, 17996, 22495, 24540, 26070, 26994, 32311, 44990, 52140, 53988, 64622, 67485, 89980, 96933, 129244, 134970, 161555, 193866, 269940, 323110, 355421, 387732, 484665, 646220, 710842, 969330, 1066263, 1421684, 1777105, 1938660, 2132526, 3554210, 4265052, 5331315, 7108420, 10662630, 21325260]

約数ペア:

[(1, 21325260), (2, 10662630), (3, 7108420), (4, 5331315), (5, 4265052), (6, 3554210), (10, 2132526), (11, 1938660), (12, 1777105), (15, 1421684), (20, 1066263), (22, 969330), (30, 710842), (33, 646220), (44, 484665), (55, 387732), (60, 355421), (66, 323110), (79, 269940), (110, 193866), (132, 161555), (158, 134970), (165, 129244), (220, 96933), (237, 89980), (316, 67485), (330, 64622), (395, 53988), (409, 52140), (474, 44990), (660, 32311), (790, 26994), (818, 26070), (869, 24540), (948, 22495), (1185, 17996), (1227, 17380), (1580, 13497), (1636, 13035), (1738, 12270), (2045, 10428), (2370, 8998), (2454, 8690), (2607, 8180), (3476, 6135), (4090, 5214), (4345, 4908), (4499, 4740)]