257360012

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:355

約数の個数: 96

約数和(自身を含む): 578083968

約数和(自身を除く): 320723956

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 37, 52, 74, 91, 97, 148, 182, 194, 197, 259, 364, 388, 394, 481, 518, 679, 788, 962, 1036, 1261, 1358, 1379, 1924, 2522, 2561, 2716, 2758, 3367, 3589, 5044, 5122, 5516, 6734, 7178, 7289, 8827, 10244, 13468, 14356, 14578, 17654, 17927, 19109, 25123, 29156, 35308, 35854, 38218, 46657, 50246, 51023, 71708, 76436, 93314, 94757, 100492, 102046, 133763, 186628, 189514, 204092, 248417, 267526, 326599, 379028, 496834, 535052, 653198, 663299, 707033, 993668, 1306396, 1326598, 1414066, 1738919, 2653196, 2828132, 3477838, 4949231, 6955676, 9191429, 9898462, 18382858, 19796924, 36765716, 64340003, 128680006, 257360012]

約数ペア:

[(1, 257360012), (2, 128680006), (4, 64340003), (7, 36765716), (13, 19796924), (14, 18382858), (26, 9898462), (28, 9191429), (37, 6955676), (52, 4949231), (74, 3477838), (91, 2828132), (97, 2653196), (148, 1738919), (182, 1414066), (194, 1326598), (197, 1306396), (259, 993668), (364, 707033), (388, 663299), (394, 653198), (481, 535052), (518, 496834), (679, 379028), (788, 326599), (962, 267526), (1036, 248417), (1261, 204092), (1358, 189514), (1379, 186628), (1924, 133763), (2522, 102046), (2561, 100492), (2716, 94757), (2758, 93314), (3367, 76436), (3589, 71708), (5044, 51023), (5122, 50246), (5516, 46657), (6734, 38218), (7178, 35854), (7289, 35308), (8827, 29156), (10244, 25123), (13468, 19109), (14356, 17927), (14578, 17654)]