21392019

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{151}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 35852544

約数和(自身を除く): 14460525

約数列:

[1, 3, 9, 11, 27, 33, 53, 81, 99, 151, 159, 243, 297, 453, 477, 583, 891, 1359, 1431, 1661, 1749, 2673, 4077, 4293, 4983, 5247, 8003, 12231, 12879, 14949, 15741, 24009, 36693, 44847, 47223, 72027, 88033, 134541, 141669, 216081, 264099, 403623, 648243, 792297, 1944729, 2376891, 7130673, 21392019]

約数ペア:

[(1, 21392019), (3, 7130673), (9, 2376891), (11, 1944729), (27, 792297), (33, 648243), (53, 403623), (81, 264099), (99, 216081), (151, 141669), (159, 134541), (243, 88033), (297, 72027), (453, 47223), (477, 44847), (583, 36693), (891, 24009), (1359, 15741), (1431, 14949), (1661, 12879), (1749, 12231), (2673, 8003), (4077, 5247), (4293, 4983)]