21985675

素因数分解:

$5^2\times {\mathrm{17}}^3\times {\mathrm{179}}^1$

素因数の和:240

約数の個数: 24

約数和(自身を含む): 29127600

約数和(自身を除く): 7141925

約数列:

[1, 5, 17, 25, 85, 179, 289, 425, 895, 1445, 3043, 4475, 4913, 7225, 15215, 24565, 51731, 76075, 122825, 258655, 879427, 1293275, 4397135, 21985675]

約数ペア:

[(1, 21985675), (5, 4397135), (17, 1293275), (25, 879427), (85, 258655), (179, 122825), (289, 76075), (425, 51731), (895, 24565), (1445, 15215), (3043, 7225), (4475, 4913)]