20120975

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4999}}^1$

素因数の和:5039

約数の個数: 24

約数和(自身を含む): 29760000

約数和(自身を除く): 9639025

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025, 4999, 24995, 34993, 114977, 124975, 174965, 574885, 804839, 874825, 2874425, 4024195, 20120975]

約数ペア:

[(1, 20120975), (5, 4024195), (7, 2874425), (23, 874825), (25, 804839), (35, 574885), (115, 174965), (161, 124975), (175, 114977), (575, 34993), (805, 24995), (4025, 4999)]