20187091575

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{6917}}^1$

素因数の和:7066

約数の個数: 144

約数和(自身を含む): 44161191360

約数和(自身を除く): 23974099785

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 25, 35, 45, 51, 63, 75, 85, 105, 109, 119, 153, 175, 225, 255, 315, 327, 357, 425, 525, 545, 595, 763, 765, 981, 1071, 1275, 1575, 1635, 1785, 1853, 2289, 2725, 2975, 3815, 3825, 4905, 5355, 5559, 6867, 6917, 8175, 8925, 9265, 11445, 12971, 16677, 19075, 20751, 24525, 26775, 27795, 34335, 34585, 38913, 46325, 48419, 57225, 62253, 64855, 83385, 103755, 116739, 117589, 138975, 145257, 171675, 172925, 194565, 242095, 311265, 324275, 352767, 416925, 435771, 518775, 583695, 587945, 726285, 753953, 823123, 972825, 1058301, 1210475, 1556325, 1763835, 2178855, 2261859, 2469369, 2918475, 2939725, 3631425, 3769765, 4115615, 5277671, 5291505, 6785577, 7408107, 8819175, 10894275, 11309295, 12346845, 12817201, 15833013, 18848825, 20578075, 26388355, 26457525, 33927885, 37040535, 38451603, 47499039, 56546475, 61734225, 64086005, 79165065, 89720407, 115354809, 131941775, 169639425, 185202675, 192258015, 237495195, 269161221, 320430025, 395825325, 448602035, 576774045, 807483663, 961290075, 1187475975, 1345806105, 2243010175, 2883870225, 4037418315, 6729030525, 20187091575]

約数ペア:

[(1, 20187091575), (3, 6729030525), (5, 4037418315), (7, 2883870225), (9, 2243010175), (15, 1345806105), (17, 1187475975), (21, 961290075), (25, 807483663), (35, 576774045), (45, 448602035), (51, 395825325), (63, 320430025), (75, 269161221), (85, 237495195), (105, 192258015), (109, 185202675), (119, 169639425), (153, 131941775), (175, 115354809), (225, 89720407), (255, 79165065), (315, 64086005), (327, 61734225), (357, 56546475), (425, 47499039), (525, 38451603), (545, 37040535), (595, 33927885), (763, 26457525), (765, 26388355), (981, 20578075), (1071, 18848825), (1275, 15833013), (1575, 12817201), (1635, 12346845), (1785, 11309295), (1853, 10894275), (2289, 8819175), (2725, 7408107), (2975, 6785577), (3815, 5291505), (3825, 5277671), (4905, 4115615), (5355, 3769765), (5559, 3631425), (6867, 2939725), (6917, 2918475), (8175, 2469369), (8925, 2261859), (9265, 2178855), (11445, 1763835), (12971, 1556325), (16677, 1210475), (19075, 1058301), (20751, 972825), (24525, 823123), (26775, 753953), (27795, 726285), (34335, 587945), (34585, 583695), (38913, 518775), (46325, 435771), (48419, 416925), (57225, 352767), (62253, 324275), (64855, 311265), (83385, 242095), (103755, 194565), (116739, 172925), (117589, 171675), (138975, 145257)]