20478572215

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{197641}}^1$

素因数の和:197739

約数の個数: 32

約数和(自身を含む): 27663555456

約数和(自身を除く): 7184983241

約数列:

[1, 5, 17, 23, 53, 85, 115, 265, 391, 901, 1219, 1955, 4505, 6095, 20723, 103615, 197641, 988205, 3359897, 4545743, 10474973, 16799485, 22728715, 52374865, 77277631, 178074541, 240924379, 386388155, 890372705, 1204621895, 4095714443, 20478572215]

約数ペア:

[(1, 20478572215), (5, 4095714443), (17, 1204621895), (23, 890372705), (53, 386388155), (85, 240924379), (115, 178074541), (265, 77277631), (391, 52374865), (901, 22728715), (1219, 16799485), (1955, 10474973), (4505, 4545743), (6095, 3359897), (20723, 988205), (103615, 197641)]