987987455

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1\times {\mathrm{251}}^1$

素因数の和:528

約数の個数: 64

約数和(自身を含む): 1507838976

約数和(自身を除く): 519851521

約数列:

[1, 5, 7, 13, 35, 41, 65, 91, 205, 211, 251, 287, 455, 533, 1055, 1255, 1435, 1477, 1757, 2665, 2743, 3263, 3731, 7385, 8651, 8785, 10291, 13715, 16315, 18655, 19201, 22841, 43255, 51455, 52961, 60557, 72037, 96005, 112463, 114205, 133783, 264805, 302785, 360185, 370727, 562315, 668915, 688493, 787241, 936481, 1853635, 2171401, 3442465, 3936205, 4682405, 4819451, 10857005, 15199807, 24097255, 28228213, 75999035, 141141065, 197597491, 987987455]

約数ペア:

[(1, 987987455), (5, 197597491), (7, 141141065), (13, 75999035), (35, 28228213), (41, 24097255), (65, 15199807), (91, 10857005), (205, 4819451), (211, 4682405), (251, 3936205), (287, 3442465), (455, 2171401), (533, 1853635), (1055, 936481), (1255, 787241), (1435, 688493), (1477, 668915), (1757, 562315), (2665, 370727), (2743, 360185), (3263, 302785), (3731, 264805), (7385, 133783), (8651, 114205), (8785, 112463), (10291, 96005), (13715, 72037), (16315, 60557), (18655, 52961), (19201, 51455), (22841, 43255)]