19951785

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:555

約数の個数: 64

約数和(自身を含む): 41564160

約数和(自身を除く): 21612375

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 43, 45, 63, 105, 129, 135, 189, 215, 301, 315, 387, 491, 645, 903, 945, 1161, 1473, 1505, 1935, 2455, 2709, 3437, 4419, 4515, 5805, 7365, 8127, 10311, 13257, 13545, 17185, 21113, 22095, 30933, 40635, 51555, 63339, 66285, 92799, 105565, 147791, 154665, 190017, 316695, 443373, 463995, 570051, 738955, 950085, 1330119, 2216865, 2850255, 3990357, 6650595, 19951785]

約数ペア:

[(1, 19951785), (3, 6650595), (5, 3990357), (7, 2850255), (9, 2216865), (15, 1330119), (21, 950085), (27, 738955), (35, 570051), (43, 463995), (45, 443373), (63, 316695), (105, 190017), (129, 154665), (135, 147791), (189, 105565), (215, 92799), (301, 66285), (315, 63339), (387, 51555), (491, 40635), (645, 30933), (903, 22095), (945, 21113), (1161, 17185), (1473, 13545), (1505, 13257), (1935, 10311), (2455, 8127), (2709, 7365), (3437, 5805), (4419, 4515)]