21042893

素因数分解:

${\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{263}}^1$

素因数の和:412

約数の個数: 16

約数和(自身を含む): 22809600

約数和(自身を除く): 1766707

約数列:

[1, 29, 31, 89, 263, 899, 2581, 2759, 7627, 8153, 23407, 80011, 236437, 678803, 725617, 21042893]

約数ペア:

[(1, 21042893), (29, 725617), (31, 678803), (89, 236437), (263, 80011), (899, 23407), (2581, 8153), (2759, 7627)]