21215672387

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{3253}}^1$

素因数の和:3472

約数の個数: 48

約数和(自身を含む): 27153979200

約数和(自身を除く): 5938306813

約数列:

[1, 7, 13, 37, 91, 149, 169, 259, 481, 1043, 1183, 1937, 3253, 3367, 5513, 6253, 13559, 22771, 25181, 38591, 42289, 43771, 71669, 120361, 176267, 296023, 484697, 501683, 549757, 842527, 931697, 1564693, 3392879, 3848299, 6301061, 6521879, 10952851, 17933789, 20341009, 44107427, 81913793, 125536523, 142387063, 233139257, 573396551, 1631974799, 3030810341, 21215672387]

約数ペア:

[(1, 21215672387), (7, 3030810341), (13, 1631974799), (37, 573396551), (91, 233139257), (149, 142387063), (169, 125536523), (259, 81913793), (481, 44107427), (1043, 20341009), (1183, 17933789), (1937, 10952851), (3253, 6521879), (3367, 6301061), (5513, 3848299), (6253, 3392879), (13559, 1564693), (22771, 931697), (25181, 842527), (38591, 549757), (42289, 501683), (43771, 484697), (71669, 296023), (120361, 176267)]