20512781576

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{144383}}^1$

素因数の和:144498

約数の個数: 64

約数和(自身を含む): 45740851200

約数和(自身を除く): 25228069624

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 59, 86, 118, 172, 236, 301, 344, 413, 472, 602, 826, 1204, 1652, 2408, 2537, 3304, 5074, 10148, 17759, 20296, 35518, 71036, 142072, 144383, 288766, 577532, 1010681, 1155064, 2021362, 4042724, 6208469, 8085448, 8518597, 12416938, 17037194, 24833876, 34074388, 43459283, 49667752, 59630179, 68148776, 86918566, 119260358, 173837132, 238520716, 347674264, 366299671, 477041432, 732599342, 1465198684, 2564097697, 2930397368, 5128195394, 10256390788, 20512781576]

約数ペア:

[(1, 20512781576), (2, 10256390788), (4, 5128195394), (7, 2930397368), (8, 2564097697), (14, 1465198684), (28, 732599342), (43, 477041432), (56, 366299671), (59, 347674264), (86, 238520716), (118, 173837132), (172, 119260358), (236, 86918566), (301, 68148776), (344, 59630179), (413, 49667752), (472, 43459283), (602, 34074388), (826, 24833876), (1204, 17037194), (1652, 12416938), (2408, 8518597), (2537, 8085448), (3304, 6208469), (5074, 4042724), (10148, 2021362), (17759, 1155064), (20296, 1010681), (35518, 577532), (71036, 288766), (142072, 144383)]