18948890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{181}}^1$

素因数の和:255

約数の個数: 48

約数和(自身を含む): 37444680

約数和(自身を除く): 18495790

約数列:

[1, 2, 5, 10, 19, 29, 38, 58, 95, 145, 181, 190, 290, 361, 362, 551, 722, 905, 1102, 1805, 1810, 2755, 3439, 3610, 5249, 5510, 6878, 10469, 10498, 17195, 20938, 26245, 34390, 52345, 52490, 65341, 99731, 104690, 130682, 199462, 326705, 498655, 653410, 997310, 1894889, 3789778, 9474445, 18948890]

約数ペア:

[(1, 18948890), (2, 9474445), (5, 3789778), (10, 1894889), (19, 997310), (29, 653410), (38, 498655), (58, 326705), (95, 199462), (145, 130682), (181, 104690), (190, 99731), (290, 65341), (361, 52490), (362, 52345), (551, 34390), (722, 26245), (905, 20938), (1102, 17195), (1805, 10498), (1810, 10469), (2755, 6878), (3439, 5510), (3610, 5249)]