20171085905

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:347

約数の個数: 96

約数和(自身を含む): 27940163328

約数和(自身を除く): 7769077423

約数列:

[1, 5, 17, 23, 41, 85, 113, 115, 131, 205, 289, 391, 565, 655, 697, 943, 1445, 1921, 1955, 2227, 2599, 3013, 3485, 4633, 4715, 5371, 6647, 9605, 11135, 11849, 12995, 14803, 15065, 16031, 23165, 26855, 32657, 33235, 37859, 44183, 51221, 59245, 74015, 78761, 80155, 91307, 106559, 123533, 163285, 189295, 220915, 251651, 256105, 272527, 340469, 393805, 456535, 532795, 606923, 617665, 751111, 870757, 1258255, 1338937, 1362635, 1552219, 1702345, 1811503, 2100061, 3034615, 3755555, 4278067, 4353785, 5787973, 6694685, 7761095, 9057515, 10317691, 10500305, 13959229, 21390335, 28939865, 30795551, 35701037, 51588455, 69796145, 98395541, 153977755, 175400747, 178505185, 237306893, 491977705, 877003735, 1186534465, 4034217181, 20171085905]

約数ペア:

[(1, 20171085905), (5, 4034217181), (17, 1186534465), (23, 877003735), (41, 491977705), (85, 237306893), (113, 178505185), (115, 175400747), (131, 153977755), (205, 98395541), (289, 69796145), (391, 51588455), (565, 35701037), (655, 30795551), (697, 28939865), (943, 21390335), (1445, 13959229), (1921, 10500305), (1955, 10317691), (2227, 9057515), (2599, 7761095), (3013, 6694685), (3485, 5787973), (4633, 4353785), (4715, 4278067), (5371, 3755555), (6647, 3034615), (9605, 2100061), (11135, 1811503), (11849, 1702345), (12995, 1552219), (14803, 1362635), (15065, 1338937), (16031, 1258255), (23165, 870757), (26855, 751111), (32657, 617665), (33235, 606923), (37859, 532795), (44183, 456535), (51221, 393805), (59245, 340469), (74015, 272527), (78761, 256105), (80155, 251651), (91307, 220915), (106559, 189295), (123533, 163285)]