891215140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:254

約数の個数: 144

約数和(自身を含む): 2146444272

約数和(自身を除く): 1255229132

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 53, 68, 76, 85, 95, 106, 137, 170, 190, 212, 265, 274, 323, 340, 361, 380, 530, 548, 646, 685, 722, 901, 1007, 1060, 1292, 1370, 1444, 1615, 1802, 1805, 2014, 2329, 2603, 2740, 3230, 3604, 3610, 4028, 4505, 4658, 5035, 5206, 6137, 6460, 7220, 7261, 9010, 9316, 10070, 10412, 11645, 12274, 13015, 14522, 17119, 18020, 19133, 20140, 23290, 24548, 26030, 29044, 30685, 34238, 36305, 38266, 44251, 46580, 49457, 52060, 61370, 68476, 72610, 76532, 85595, 88502, 95665, 98914, 122740, 123437, 137959, 145220, 171190, 177004, 191330, 197828, 221255, 246874, 247285, 275918, 325261, 342380, 382660, 442510, 493748, 494570, 551836, 617185, 650522, 689795, 840769, 885020, 989140, 1234370, 1301044, 1379590, 1626305, 1681538, 2345303, 2468740, 2621221, 2759180, 3252610, 3363076, 4203845, 4690606, 5242442, 6505220, 8407690, 9381212, 10484884, 11726515, 13106105, 16815380, 23453030, 26212210, 44560757, 46906060, 52424420, 89121514, 178243028, 222803785, 445607570, 891215140]

約数ペア:

[(1, 891215140), (2, 445607570), (4, 222803785), (5, 178243028), (10, 89121514), (17, 52424420), (19, 46906060), (20, 44560757), (34, 26212210), (38, 23453030), (53, 16815380), (68, 13106105), (76, 11726515), (85, 10484884), (95, 9381212), (106, 8407690), (137, 6505220), (170, 5242442), (190, 4690606), (212, 4203845), (265, 3363076), (274, 3252610), (323, 2759180), (340, 2621221), (361, 2468740), (380, 2345303), (530, 1681538), (548, 1626305), (646, 1379590), (685, 1301044), (722, 1234370), (901, 989140), (1007, 885020), (1060, 840769), (1292, 689795), (1370, 650522), (1444, 617185), (1615, 551836), (1802, 494570), (1805, 493748), (2014, 442510), (2329, 382660), (2603, 342380), (2740, 325261), (3230, 275918), (3604, 247285), (3610, 246874), (4028, 221255), (4505, 197828), (4658, 191330), (5035, 177004), (5206, 171190), (6137, 145220), (6460, 137959), (7220, 123437), (7261, 122740), (9010, 98914), (9316, 95665), (10070, 88502), (10412, 85595), (11645, 76532), (12274, 72610), (13015, 68476), (14522, 61370), (17119, 52060), (18020, 49457), (19133, 46580), (20140, 44251), (23290, 38266), (24548, 36305), (26030, 34238), (29044, 30685)]