20553225

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3559}}^1$

素因数の和:3590

約数の個数: 48

約数和(自身を含む): 42378240

約数和(自身を除く): 21825015

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 55, 75, 77, 105, 165, 175, 231, 275, 385, 525, 825, 1155, 1925, 3559, 5775, 10677, 17795, 24913, 39149, 53385, 74739, 88975, 117447, 124565, 195745, 266925, 274043, 373695, 587235, 622825, 822129, 978725, 1370215, 1868475, 2936175, 4110645, 6851075, 20553225]

約数ペア:

[(1, 20553225), (3, 6851075), (5, 4110645), (7, 2936175), (11, 1868475), (15, 1370215), (21, 978725), (25, 822129), (33, 622825), (35, 587235), (55, 373695), (75, 274043), (77, 266925), (105, 195745), (165, 124565), (175, 117447), (231, 88975), (275, 74739), (385, 53385), (525, 39149), (825, 24913), (1155, 17795), (1925, 10677), (3559, 5775)]