21493695

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2719}}^1$

素因数の和:2775

約数の個数: 32

約数和(自身を含む): 37601280

約数和(自身を除く): 16107585

約数列:

[1, 3, 5, 15, 17, 31, 51, 85, 93, 155, 255, 465, 527, 1581, 2635, 2719, 7905, 8157, 13595, 40785, 46223, 84289, 138669, 231115, 252867, 421445, 693345, 1264335, 1432913, 4298739, 7164565, 21493695]

約数ペア:

[(1, 21493695), (3, 7164565), (5, 4298739), (15, 1432913), (17, 1264335), (31, 693345), (51, 421445), (85, 252867), (93, 231115), (155, 138669), (255, 84289), (465, 46223), (527, 40785), (1581, 13595), (2635, 8157), (2719, 7905)]