21791406

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{373}}^1$

素因数の和:505

約数の個数: 64

約数和(自身を含む): 54286848

約数和(自身を除く): 32495442

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 107, 182, 214, 273, 321, 373, 546, 642, 746, 749, 1119, 1391, 1498, 2238, 2247, 2611, 2782, 4173, 4494, 4849, 5222, 7833, 8346, 9698, 9737, 14547, 15666, 19474, 29094, 29211, 33943, 39911, 58422, 67886, 79822, 101829, 119733, 203658, 239466, 279377, 518843, 558754, 838131, 1037686, 1556529, 1676262, 3113058, 3631901, 7263802, 10895703, 21791406]

約数ペア:

[(1, 21791406), (2, 10895703), (3, 7263802), (6, 3631901), (7, 3113058), (13, 1676262), (14, 1556529), (21, 1037686), (26, 838131), (39, 558754), (42, 518843), (78, 279377), (91, 239466), (107, 203658), (182, 119733), (214, 101829), (273, 79822), (321, 67886), (373, 58422), (546, 39911), (642, 33943), (746, 29211), (749, 29094), (1119, 19474), (1391, 15666), (1498, 14547), (2238, 9737), (2247, 9698), (2611, 8346), (2782, 7833), (4173, 5222), (4494, 4849)]