21000865884

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^2\times {\mathrm{97}}^1\times {\mathrm{163}}^1\times {\mathrm{383}}^1$

素因数の和:684

約数の個数: 144

約数和(自身を含む): 53051486208

約数和(自身を除く): 32050620324

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 97, 102, 163, 194, 204, 289, 291, 326, 383, 388, 489, 578, 582, 652, 766, 867, 978, 1149, 1156, 1164, 1532, 1649, 1734, 1956, 2298, 2771, 3298, 3468, 4596, 4947, 5542, 6511, 6596, 8313, 9894, 11084, 13022, 15811, 16626, 19533, 19788, 26044, 28033, 31622, 33252, 37151, 39066, 47107, 47433, 56066, 62429, 63244, 74302, 78132, 84099, 94214, 94866, 110687, 111453, 112132, 124858, 141321, 148604, 168198, 187287, 188428, 189732, 221374, 222906, 249716, 268787, 282642, 332061, 336396, 374574, 442748, 445812, 537574, 565284, 631567, 664122, 749148, 806361, 1061293, 1075148, 1263134, 1328244, 1612722, 1894701, 2122586, 2526268, 3183879, 3225444, 3789402, 4245172, 4569379, 6055613, 6367758, 7578804, 9138758, 10736639, 12111226, 12735516, 13708137, 18041981, 18166839, 18277516, 21473278, 24222452, 27416274, 32209917, 36083962, 36333678, 42946556, 54125943, 54832548, 64419834, 72167924, 72667356, 102945421, 108251886, 128839668, 205890842, 216503772, 308836263, 411781684, 617672526, 1235345052, 1750072157, 3500144314, 5250216471, 7000288628, 10500432942, 21000865884]

約数ペア:

[(1, 21000865884), (2, 10500432942), (3, 7000288628), (4, 5250216471), (6, 3500144314), (12, 1750072157), (17, 1235345052), (34, 617672526), (51, 411781684), (68, 308836263), (97, 216503772), (102, 205890842), (163, 128839668), (194, 108251886), (204, 102945421), (289, 72667356), (291, 72167924), (326, 64419834), (383, 54832548), (388, 54125943), (489, 42946556), (578, 36333678), (582, 36083962), (652, 32209917), (766, 27416274), (867, 24222452), (978, 21473278), (1149, 18277516), (1156, 18166839), (1164, 18041981), (1532, 13708137), (1649, 12735516), (1734, 12111226), (1956, 10736639), (2298, 9138758), (2771, 7578804), (3298, 6367758), (3468, 6055613), (4596, 4569379), (4947, 4245172), (5542, 3789402), (6511, 3225444), (6596, 3183879), (8313, 2526268), (9894, 2122586), (11084, 1894701), (13022, 1612722), (15811, 1328244), (16626, 1263134), (19533, 1075148), (19788, 1061293), (26044, 806361), (28033, 749148), (31622, 664122), (33252, 631567), (37151, 565284), (39066, 537574), (47107, 445812), (47433, 442748), (56066, 374574), (62429, 336396), (63244, 332061), (74302, 282642), (78132, 268787), (84099, 249716), (94214, 222906), (94866, 221374), (110687, 189732), (111453, 188428), (112132, 187287), (124858, 168198), (141321, 148604)]