21281364

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1229}}^1$

素因数の和:1289

約数の個数: 72

約数和(自身を含む): 59546760

約数和(自身を除く): 38265396

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 37, 39, 52, 74, 78, 111, 117, 148, 156, 222, 234, 333, 444, 468, 481, 666, 962, 1229, 1332, 1443, 1924, 2458, 2886, 3687, 4329, 4916, 5772, 7374, 8658, 11061, 14748, 15977, 17316, 22122, 31954, 44244, 45473, 47931, 63908, 90946, 95862, 136419, 143793, 181892, 191724, 272838, 287586, 409257, 545676, 575172, 591149, 818514, 1182298, 1637028, 1773447, 2364596, 3546894, 5320341, 7093788, 10640682, 21281364]

約数ペア:

[(1, 21281364), (2, 10640682), (3, 7093788), (4, 5320341), (6, 3546894), (9, 2364596), (12, 1773447), (13, 1637028), (18, 1182298), (26, 818514), (36, 591149), (37, 575172), (39, 545676), (52, 409257), (74, 287586), (78, 272838), (111, 191724), (117, 181892), (148, 143793), (156, 136419), (222, 95862), (234, 90946), (333, 63908), (444, 47931), (468, 45473), (481, 44244), (666, 31954), (962, 22122), (1229, 17316), (1332, 15977), (1443, 14748), (1924, 11061), (2458, 8658), (2886, 7374), (3687, 5772), (4329, 4916)]