21820995

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:246

約数の個数: 80

約数和(自身を含む): 45999360

約数和(自身を除く): 24178365

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 43, 45, 63, 81, 105, 129, 135, 179, 189, 215, 301, 315, 387, 405, 537, 567, 645, 895, 903, 945, 1161, 1253, 1505, 1611, 1935, 2685, 2709, 2835, 3483, 3759, 4515, 4833, 5805, 6265, 7697, 8055, 8127, 11277, 13545, 14499, 17415, 18795, 23091, 24165, 24381, 33831, 38485, 40635, 53879, 56385, 69273, 72495, 101493, 115455, 121905, 161637, 169155, 207819, 269395, 346365, 484911, 507465, 623457, 808185, 1039095, 1454733, 2424555, 3117285, 4364199, 7273665, 21820995]

約数ペア:

[(1, 21820995), (3, 7273665), (5, 4364199), (7, 3117285), (9, 2424555), (15, 1454733), (21, 1039095), (27, 808185), (35, 623457), (43, 507465), (45, 484911), (63, 346365), (81, 269395), (105, 207819), (129, 169155), (135, 161637), (179, 121905), (189, 115455), (215, 101493), (301, 72495), (315, 69273), (387, 56385), (405, 53879), (537, 40635), (567, 38485), (645, 33831), (895, 24381), (903, 24165), (945, 23091), (1161, 18795), (1253, 17415), (1505, 14499), (1611, 13545), (1935, 11277), (2685, 8127), (2709, 8055), (2835, 7697), (3483, 6265), (3759, 5805), (4515, 4833)]