81215615

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 107956800

約数和(自身を除く): 26741185

約数列:

[1, 5, 13, 65, 89, 101, 139, 445, 505, 695, 1157, 1313, 1807, 5785, 6565, 8989, 9035, 12371, 14039, 44945, 61855, 70195, 116857, 160823, 182507, 584285, 804115, 912535, 1249471, 6247355, 16243123, 81215615]

約数ペア:

[(1, 81215615), (5, 16243123), (13, 6247355), (65, 1249471), (89, 912535), (101, 804115), (139, 584285), (445, 182507), (505, 160823), (695, 116857), (1157, 70195), (1313, 61855), (1807, 44945), (5785, 14039), (6565, 12371), (8989, 9035)]