21380268

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2797}}^1$

素因数の和:2831

約数の個数: 72

約数和(自身を含む): 62518512

約数和(自身を除く): 41138244

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 49, 52, 78, 84, 91, 98, 147, 156, 182, 196, 273, 294, 364, 546, 588, 637, 1092, 1274, 1911, 2548, 2797, 3822, 5594, 7644, 8391, 11188, 16782, 19579, 33564, 36361, 39158, 58737, 72722, 78316, 109083, 117474, 137053, 145444, 218166, 234948, 254527, 274106, 411159, 436332, 509054, 548212, 763581, 822318, 1018108, 1527162, 1644636, 1781689, 3054324, 3563378, 5345067, 7126756, 10690134, 21380268]

約数ペア:

[(1, 21380268), (2, 10690134), (3, 7126756), (4, 5345067), (6, 3563378), (7, 3054324), (12, 1781689), (13, 1644636), (14, 1527162), (21, 1018108), (26, 822318), (28, 763581), (39, 548212), (42, 509054), (49, 436332), (52, 411159), (78, 274106), (84, 254527), (91, 234948), (98, 218166), (147, 145444), (156, 137053), (182, 117474), (196, 109083), (273, 78316), (294, 72722), (364, 58737), (546, 39158), (588, 36361), (637, 33564), (1092, 19579), (1274, 16782), (1911, 11188), (2548, 8391), (2797, 7644), (3822, 5594)]