18715228

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{277}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 39854080

約数和(自身を除く): 21138852

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 127, 133, 254, 266, 277, 508, 532, 554, 889, 1108, 1778, 1939, 2413, 3556, 3878, 4826, 5263, 7756, 9652, 10526, 16891, 21052, 33782, 35179, 36841, 67564, 70358, 73682, 140716, 147364, 246253, 492506, 668401, 985012, 1336802, 2673604, 4678807, 9357614, 18715228]

約数ペア:

[(1, 18715228), (2, 9357614), (4, 4678807), (7, 2673604), (14, 1336802), (19, 985012), (28, 668401), (38, 492506), (76, 246253), (127, 147364), (133, 140716), (254, 73682), (266, 70358), (277, 67564), (508, 36841), (532, 35179), (554, 33782), (889, 21052), (1108, 16891), (1778, 10526), (1939, 9652), (2413, 7756), (3556, 5263), (3878, 4826)]