21480085

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{3583}}^1$

素因数の和:3708

約数の個数: 16

約数和(自身を含む): 28385280

約数和(自身を除く): 6905195

約数列:

[1, 5, 11, 55, 109, 545, 1199, 3583, 5995, 17915, 39413, 197065, 390547, 1952735, 4296017, 21480085]

約数ペア:

[(1, 21480085), (5, 4296017), (11, 1952735), (55, 390547), (109, 197065), (545, 39413), (1199, 17915), (3583, 5995)]