20577225

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16139}}^1$

素因数の和:16169

約数の個数: 24

約数和(自身を含む): 36024480

約数和(自身を除く): 15447255

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16139, 48417, 80695, 242085, 274363, 403475, 823089, 1210425, 1371815, 4115445, 6859075, 20577225]

約数ペア:

[(1, 20577225), (3, 6859075), (5, 4115445), (15, 1371815), (17, 1210425), (25, 823089), (51, 403475), (75, 274363), (85, 242085), (255, 80695), (425, 48417), (1275, 16139)]