21777140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{179}}^1$

素因数の和:285

約数の個数: 96

約数和(自身を含む): 58060800

約数和(自身を除く): 36283660

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 79, 110, 140, 154, 158, 179, 220, 308, 316, 358, 385, 395, 553, 716, 770, 790, 869, 895, 1106, 1253, 1540, 1580, 1738, 1790, 1969, 2212, 2506, 2765, 3476, 3580, 3938, 4345, 5012, 5530, 6083, 6265, 7876, 8690, 9845, 11060, 12166, 12530, 13783, 14141, 17380, 19690, 24332, 25060, 27566, 28282, 30415, 39380, 55132, 56564, 60830, 68915, 70705, 98987, 121660, 137830, 141410, 155551, 197974, 275660, 282820, 311102, 395948, 494935, 622204, 777755, 989870, 1088857, 1555510, 1979740, 2177714, 3111020, 4355428, 5444285, 10888570, 21777140]

約数ペア:

[(1, 21777140), (2, 10888570), (4, 5444285), (5, 4355428), (7, 3111020), (10, 2177714), (11, 1979740), (14, 1555510), (20, 1088857), (22, 989870), (28, 777755), (35, 622204), (44, 494935), (55, 395948), (70, 311102), (77, 282820), (79, 275660), (110, 197974), (140, 155551), (154, 141410), (158, 137830), (179, 121660), (220, 98987), (308, 70705), (316, 68915), (358, 60830), (385, 56564), (395, 55132), (553, 39380), (716, 30415), (770, 28282), (790, 27566), (869, 25060), (895, 24332), (1106, 19690), (1253, 17380), (1540, 14141), (1580, 13783), (1738, 12530), (1790, 12166), (1969, 11060), (2212, 9845), (2506, 8690), (2765, 7876), (3476, 6265), (3580, 6083), (3938, 5530), (4345, 5012)]