21297645

素因数分解:

$3^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1493}}^1$

素因数の和:1821

約数の個数: 24

約数和(自身を含む): 37057176

約数和(自身を除く): 15759531

約数列:

[1, 3, 5, 9, 15, 45, 317, 951, 1493, 1585, 2853, 4479, 4755, 7465, 13437, 14265, 22395, 67185, 473281, 1419843, 2366405, 4259529, 7099215, 21297645]

約数ペア:

[(1, 21297645), (3, 7099215), (5, 4259529), (9, 2366405), (15, 1419843), (45, 473281), (317, 67185), (951, 22395), (1493, 14265), (1585, 13437), (2853, 7465), (4479, 4755)]