28009975

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6959}}^1$

素因数の和:6999

約数の個数: 24

約数和(自身を含む): 41425920

約数和(自身を除く): 13415945

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025, 6959, 34795, 48713, 160057, 173975, 243565, 800285, 1120399, 1217825, 4001425, 5601995, 28009975]

約数ペア:

[(1, 28009975), (5, 5601995), (7, 4001425), (23, 1217825), (25, 1120399), (35, 800285), (115, 243565), (161, 173975), (175, 160057), (575, 48713), (805, 34795), (4025, 6959)]