20809526855

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{571}}^1$

素因数の和:721

約数の個数: 96

約数和(自身を含む): 29845221120

約数和(自身を除く): 9035694265

約数列:

[1, 5, 13, 17, 43, 59, 65, 85, 169, 215, 221, 295, 559, 571, 731, 767, 845, 1003, 1105, 2537, 2795, 2855, 2873, 3655, 3835, 5015, 7267, 7423, 9503, 9707, 9971, 12685, 13039, 14365, 24553, 32981, 33689, 36335, 37115, 43129, 47515, 48535, 49855, 65195, 96499, 122765, 123539, 126191, 164905, 168445, 169507, 215645, 319189, 417401, 428753, 437957, 482495, 560677, 572713, 617695, 630955, 847535, 1448627, 1595945, 1640483, 2087005, 2143765, 2189785, 2803385, 2863565, 4149457, 5426213, 5693441, 7243135, 7288801, 7445269, 8202415, 18832151, 20747285, 24626659, 27131065, 28467205, 36444005, 37226345, 70540769, 94160755, 96788497, 123133295, 244817963, 320146567, 352703845, 483942485, 1224089815, 1600732835, 4161905371, 20809526855]

約数ペア:

[(1, 20809526855), (5, 4161905371), (13, 1600732835), (17, 1224089815), (43, 483942485), (59, 352703845), (65, 320146567), (85, 244817963), (169, 123133295), (215, 96788497), (221, 94160755), (295, 70540769), (559, 37226345), (571, 36444005), (731, 28467205), (767, 27131065), (845, 24626659), (1003, 20747285), (1105, 18832151), (2537, 8202415), (2795, 7445269), (2855, 7288801), (2873, 7243135), (3655, 5693441), (3835, 5426213), (5015, 4149457), (7267, 2863565), (7423, 2803385), (9503, 2189785), (9707, 2143765), (9971, 2087005), (12685, 1640483), (13039, 1595945), (14365, 1448627), (24553, 847535), (32981, 630955), (33689, 617695), (36335, 572713), (37115, 560677), (43129, 482495), (47515, 437957), (48535, 428753), (49855, 417401), (65195, 319189), (96499, 215645), (122765, 169507), (123539, 168445), (126191, 164905)]