21945715

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{1283}}^1$

素因数の和:1610

約数の個数: 16

約数和(自身を含む): 28843776

約数和(自身を除く): 6898061

約数列:

[1, 5, 11, 55, 311, 1283, 1555, 3421, 6415, 14113, 17105, 70565, 399013, 1995065, 4389143, 21945715]

約数ペア:

[(1, 21945715), (5, 4389143), (11, 1995065), (55, 399013), (311, 70565), (1283, 17105), (1555, 14113), (3421, 6415)]