251293315

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{307}}^1$

素因数の和:596

約数の個数: 48

約数和(自身を含む): 380473632

約数和(自身を除く): 129180317

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 257, 307, 455, 637, 1285, 1535, 1799, 2149, 3185, 3341, 3991, 8995, 10745, 12593, 15043, 16705, 19955, 23387, 27937, 62965, 75215, 78899, 116935, 139685, 163709, 195559, 394495, 552293, 818545, 977795, 1025687, 2761465, 3866051, 5128435, 7179809, 19330255, 35899045, 50258663, 251293315]

約数ペア:

[(1, 251293315), (5, 50258663), (7, 35899045), (13, 19330255), (35, 7179809), (49, 5128435), (65, 3866051), (91, 2761465), (245, 1025687), (257, 977795), (307, 818545), (455, 552293), (637, 394495), (1285, 195559), (1535, 163709), (1799, 139685), (2149, 116935), (3185, 78899), (3341, 75215), (3991, 62965), (8995, 27937), (10745, 23387), (12593, 19955), (15043, 16705)]