21153575

素因数分解:

$5^2\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1$

素因数の和:323

約数の個数: 24

約数和(自身を含む): 27142608

約数和(自身を除く): 5989033

約数列:

[1, 5, 25, 67, 73, 173, 335, 365, 865, 1675, 1825, 4325, 4891, 11591, 12629, 24455, 57955, 63145, 122275, 289775, 315725, 846143, 4230715, 21153575]

約数ペア:

[(1, 21153575), (5, 4230715), (25, 846143), (67, 315725), (73, 289775), (173, 122275), (335, 63145), (365, 57955), (865, 24455), (1675, 12629), (1825, 11591), (4325, 4891)]