21799975

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1223}}^1$

素因数の和:1287

約数の個数: 24

約数和(自身を含む): 29140992

約数和(自身を除く): 7341017

約数列:

[1, 5, 23, 25, 31, 115, 155, 575, 713, 775, 1223, 3565, 6115, 17825, 28129, 30575, 37913, 140645, 189565, 703225, 871999, 947825, 4359995, 21799975]

約数ペア:

[(1, 21799975), (5, 4359995), (23, 947825), (25, 871999), (31, 703225), (115, 189565), (155, 140645), (575, 37913), (713, 30575), (775, 28129), (1223, 17825), (3565, 6115)]