21662480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{383}}^1$

素因数の和:504

約数の個数: 80

約数和(自身を含む): 58281984

約数和(自身を除く): 36619504

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 101, 112, 140, 202, 280, 383, 404, 505, 560, 707, 766, 808, 1010, 1414, 1532, 1616, 1915, 2020, 2681, 2828, 3064, 3535, 3830, 4040, 5362, 5656, 6128, 7070, 7660, 8080, 10724, 11312, 13405, 14140, 15320, 21448, 26810, 28280, 30640, 38683, 42896, 53620, 56560, 77366, 107240, 154732, 193415, 214480, 270781, 309464, 386830, 541562, 618928, 773660, 1083124, 1353905, 1547320, 2166248, 2707810, 3094640, 4332496, 5415620, 10831240, 21662480]

約数ペア:

[(1, 21662480), (2, 10831240), (4, 5415620), (5, 4332496), (7, 3094640), (8, 2707810), (10, 2166248), (14, 1547320), (16, 1353905), (20, 1083124), (28, 773660), (35, 618928), (40, 541562), (56, 386830), (70, 309464), (80, 270781), (101, 214480), (112, 193415), (140, 154732), (202, 107240), (280, 77366), (383, 56560), (404, 53620), (505, 42896), (560, 38683), (707, 30640), (766, 28280), (808, 26810), (1010, 21448), (1414, 15320), (1532, 14140), (1616, 13405), (1915, 11312), (2020, 10724), (2681, 8080), (2828, 7660), (3064, 7070), (3535, 6128), (3830, 5656), (4040, 5362)]