21031875972

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1\times {\mathrm{1361}}^1$

素因数の和:1690

約数の個数: 144

約数和(自身を含む): 56065411584

約数和(自身を除く): 35033535612

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 61, 62, 93, 122, 124, 183, 186, 227, 244, 279, 366, 372, 454, 549, 558, 681, 732, 908, 1098, 1116, 1361, 1362, 1891, 2043, 2196, 2722, 2724, 3782, 4083, 4086, 5444, 5673, 7037, 7564, 8166, 8172, 11346, 12249, 13847, 14074, 16332, 17019, 21111, 22692, 24498, 27694, 28148, 34038, 41541, 42191, 42222, 48996, 55388, 63333, 68076, 83021, 83082, 84382, 84444, 124623, 126573, 126666, 166042, 166164, 168764, 249063, 249246, 253146, 253332, 308947, 332084, 379719, 429257, 498126, 498492, 506292, 617894, 747189, 759438, 858514, 926841, 996252, 1235788, 1287771, 1494378, 1518876, 1717028, 1853682, 2573651, 2575542, 2780523, 2988756, 3707364, 3863313, 5147302, 5151084, 5561046, 7720953, 7726626, 9577357, 10294604, 11122092, 15441906, 15453252, 18845767, 19154714, 23162859, 28732071, 30883812, 37691534, 38309428, 46325718, 56537301, 57464142, 75383068, 86196213, 92651436, 113074602, 114928284, 169611903, 172392426, 226149204, 339223806, 344784852, 584218777, 678447612, 1168437554, 1752656331, 2336875108, 3505312662, 5257968993, 7010625324, 10515937986, 21031875972]

約数ペア:

[(1, 21031875972), (2, 10515937986), (3, 7010625324), (4, 5257968993), (6, 3505312662), (9, 2336875108), (12, 1752656331), (18, 1168437554), (31, 678447612), (36, 584218777), (61, 344784852), (62, 339223806), (93, 226149204), (122, 172392426), (124, 169611903), (183, 114928284), (186, 113074602), (227, 92651436), (244, 86196213), (279, 75383068), (366, 57464142), (372, 56537301), (454, 46325718), (549, 38309428), (558, 37691534), (681, 30883812), (732, 28732071), (908, 23162859), (1098, 19154714), (1116, 18845767), (1361, 15453252), (1362, 15441906), (1891, 11122092), (2043, 10294604), (2196, 9577357), (2722, 7726626), (2724, 7720953), (3782, 5561046), (4083, 5151084), (4086, 5147302), (5444, 3863313), (5673, 3707364), (7037, 2988756), (7564, 2780523), (8166, 2575542), (8172, 2573651), (11346, 1853682), (12249, 1717028), (13847, 1518876), (14074, 1494378), (16332, 1287771), (17019, 1235788), (21111, 996252), (22692, 926841), (24498, 858514), (27694, 759438), (28148, 747189), (34038, 617894), (41541, 506292), (42191, 498492), (42222, 498126), (48996, 429257), (55388, 379719), (63333, 332084), (68076, 308947), (83021, 253332), (83082, 253146), (84382, 249246), (84444, 249063), (124623, 168764), (126573, 166164), (126666, 166042)]