21346521

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{331}}^1$

素因数の和:461

約数の個数: 32

約数和(自身を含む): 33911808

約数和(自身を除く): 12565287

約数列:

[1, 3, 7, 21, 37, 83, 111, 249, 259, 331, 581, 777, 993, 1743, 2317, 3071, 6951, 9213, 12247, 21497, 27473, 36741, 64491, 82419, 85729, 192311, 257187, 576933, 1016501, 3049503, 7115507, 21346521]

約数ペア:

[(1, 21346521), (3, 7115507), (7, 3049503), (21, 1016501), (37, 576933), (83, 257187), (111, 192311), (249, 85729), (259, 82419), (331, 64491), (581, 36741), (777, 27473), (993, 21497), (1743, 12247), (2317, 9213), (3071, 6951)]