21071295

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{443}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 42112512

約数和(自身を除く): 21041217

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 151, 315, 443, 453, 755, 1057, 1329, 1359, 2215, 2265, 3101, 3171, 3987, 5285, 6645, 6795, 9303, 9513, 15505, 15855, 19935, 27909, 46515, 47565, 66893, 139545, 200679, 334465, 468251, 602037, 1003395, 1404753, 2341255, 3010185, 4214259, 7023765, 21071295]

約数ペア:

[(1, 21071295), (3, 7023765), (5, 4214259), (7, 3010185), (9, 2341255), (15, 1404753), (21, 1003395), (35, 602037), (45, 468251), (63, 334465), (105, 200679), (151, 139545), (315, 66893), (443, 47565), (453, 46515), (755, 27909), (1057, 19935), (1329, 15855), (1359, 15505), (2215, 9513), (2265, 9303), (3101, 6795), (3171, 6645), (3987, 5285)]