21063172475

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{2729}}^1\times {\mathrm{16249}}^1$

素因数の和:19007

約数の個数: 24

約数和(自身を含む): 27504750000

約数和(自身を除く): 6441577525

約数列:

[1, 5, 19, 25, 95, 475, 2729, 13645, 16249, 51851, 68225, 81245, 259255, 308731, 406225, 1296275, 1543655, 7718275, 44343521, 221717605, 842526899, 1108588025, 4212634495, 21063172475]

約数ペア:

[(1, 21063172475), (5, 4212634495), (19, 1108588025), (25, 842526899), (95, 221717605), (475, 44343521), (2729, 7718275), (13645, 1543655), (16249, 1296275), (51851, 406225), (68225, 308731), (81245, 259255)]