21010309516

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{310969}}^1$

素因数の和:311126

約数の個数: 48

約数和(自身を含む): 44580659200

約数和(自身を除く): 23570349684

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 127, 133, 254, 266, 508, 532, 889, 1778, 2413, 3556, 4826, 9652, 16891, 33782, 67564, 310969, 621938, 1243876, 2176783, 4353566, 5908411, 8707132, 11816822, 23633644, 39493063, 41358877, 78986126, 82717754, 157972252, 165435508, 276451441, 552902882, 750368197, 1105805764, 1500736394, 3001472788, 5252577379, 10505154758, 21010309516]

約数ペア:

[(1, 21010309516), (2, 10505154758), (4, 5252577379), (7, 3001472788), (14, 1500736394), (19, 1105805764), (28, 750368197), (38, 552902882), (76, 276451441), (127, 165435508), (133, 157972252), (254, 82717754), (266, 78986126), (508, 41358877), (532, 39493063), (889, 23633644), (1778, 11816822), (2413, 8707132), (3556, 5908411), (4826, 4353566), (9652, 2176783), (16891, 1243876), (33782, 621938), (67564, 310969)]