21186684

素因数分解:

$2^2\times 3^5\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:397

約数の個数: 72

約数和(自身を含む): 56504448

約数和(自身を除く): 35317764

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 71, 81, 108, 142, 162, 213, 243, 284, 307, 324, 426, 486, 614, 639, 852, 921, 972, 1228, 1278, 1842, 1917, 2556, 2763, 3684, 3834, 5526, 5751, 7668, 8289, 11052, 11502, 16578, 17253, 21797, 23004, 24867, 33156, 34506, 43594, 49734, 65391, 69012, 74601, 87188, 99468, 130782, 149202, 196173, 261564, 298404, 392346, 588519, 784692, 1177038, 1765557, 2354076, 3531114, 5296671, 7062228, 10593342, 21186684]

約数ペア:

[(1, 21186684), (2, 10593342), (3, 7062228), (4, 5296671), (6, 3531114), (9, 2354076), (12, 1765557), (18, 1177038), (27, 784692), (36, 588519), (54, 392346), (71, 298404), (81, 261564), (108, 196173), (142, 149202), (162, 130782), (213, 99468), (243, 87188), (284, 74601), (307, 69012), (324, 65391), (426, 49734), (486, 43594), (614, 34506), (639, 33156), (852, 24867), (921, 23004), (972, 21797), (1228, 17253), (1278, 16578), (1842, 11502), (1917, 11052), (2556, 8289), (2763, 7668), (3684, 5751), (3834, 5526)]