81608820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19157}}^1$

素因数の和:19240

約数の個数: 48

約数和(自身を含む): 231735168

約数和(自身を除く): 150126348

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 19157, 38314, 57471, 76628, 95785, 114942, 191570, 229884, 287355, 383140, 574710, 1149420, 1360147, 2720294, 4080441, 5440588, 6800735, 8160882, 13601470, 16321764, 20402205, 27202940, 40804410, 81608820]

約数ペア:

[(1, 81608820), (2, 40804410), (3, 27202940), (4, 20402205), (5, 16321764), (6, 13601470), (10, 8160882), (12, 6800735), (15, 5440588), (20, 4080441), (30, 2720294), (60, 1360147), (71, 1149420), (142, 574710), (213, 383140), (284, 287355), (355, 229884), (426, 191570), (710, 114942), (852, 95785), (1065, 76628), (1420, 57471), (2130, 38314), (4260, 19157)]