21073625

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:290

約数の個数: 32

約数和(自身を含む): 28574208

約数和(自身を除く): 7500583

約数列:

[1, 5, 17, 25, 47, 85, 125, 211, 235, 425, 799, 1055, 1175, 2125, 3587, 3995, 5275, 5875, 9917, 17935, 19975, 26375, 49585, 89675, 99875, 168589, 247925, 448375, 842945, 1239625, 4214725, 21073625]

約数ペア:

[(1, 21073625), (5, 4214725), (17, 1239625), (25, 842945), (47, 448375), (85, 247925), (125, 168589), (211, 99875), (235, 89675), (425, 49585), (799, 26375), (1055, 19975), (1175, 17935), (2125, 9917), (3587, 5875), (3995, 5275)]