21054775

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5231}}^1$

素因数の和:5271

約数の個数: 24

約数和(自身を含む): 31140864

約数和(自身を除く): 10086089

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025, 5231, 26155, 36617, 120313, 130775, 183085, 601565, 842191, 915425, 3007825, 4210955, 21054775]

約数ペア:

[(1, 21054775), (5, 4210955), (7, 3007825), (23, 915425), (25, 842191), (35, 601565), (115, 183085), (161, 130775), (175, 120313), (575, 36617), (805, 26155), (4025, 5231)]