20908664

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{457}}^1$

素因数の和:532

約数の個数: 64

約数和(自身を含む): 48364800

約数和(自身を除く): 27456136

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 43, 56, 76, 86, 133, 152, 172, 266, 301, 344, 457, 532, 602, 817, 914, 1064, 1204, 1634, 1828, 2408, 3199, 3268, 3656, 5719, 6398, 6536, 8683, 11438, 12796, 17366, 19651, 22876, 25592, 34732, 39302, 45752, 60781, 69464, 78604, 121562, 137557, 157208, 243124, 275114, 373369, 486248, 550228, 746738, 1100456, 1493476, 2613583, 2986952, 5227166, 10454332, 20908664]

約数ペア:

[(1, 20908664), (2, 10454332), (4, 5227166), (7, 2986952), (8, 2613583), (14, 1493476), (19, 1100456), (28, 746738), (38, 550228), (43, 486248), (56, 373369), (76, 275114), (86, 243124), (133, 157208), (152, 137557), (172, 121562), (266, 78604), (301, 69464), (344, 60781), (457, 45752), (532, 39302), (602, 34732), (817, 25592), (914, 22876), (1064, 19651), (1204, 17366), (1634, 12796), (1828, 11438), (2408, 8683), (3199, 6536), (3268, 6398), (3656, 5719)]