21098825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1051}}^1$

素因数の和:1145

約数の個数: 24

約数和(自身を含む): 28959456

約数和(自身を除く): 7860631

約数列:

[1, 5, 11, 25, 55, 73, 275, 365, 803, 1051, 1825, 4015, 5255, 11561, 20075, 26275, 57805, 76723, 289025, 383615, 843953, 1918075, 4219765, 21098825]

約数ペア:

[(1, 21098825), (5, 4219765), (11, 1918075), (25, 843953), (55, 383615), (73, 289025), (275, 76723), (365, 57805), (803, 26275), (1051, 20075), (1825, 11561), (4015, 5255)]