20048895

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{179}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 37065600

約数和(自身を除く): 17016705

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 131, 171, 179, 285, 393, 537, 655, 855, 895, 1179, 1611, 1965, 2489, 2685, 3401, 5895, 7467, 8055, 10203, 12445, 17005, 22401, 23449, 30609, 37335, 51015, 70347, 112005, 117245, 153045, 211041, 351735, 445531, 1055205, 1336593, 2227655, 4009779, 6682965, 20048895]

約数ペア:

[(1, 20048895), (3, 6682965), (5, 4009779), (9, 2227655), (15, 1336593), (19, 1055205), (45, 445531), (57, 351735), (95, 211041), (131, 153045), (171, 117245), (179, 112005), (285, 70347), (393, 51015), (537, 37335), (655, 30609), (855, 23449), (895, 22401), (1179, 17005), (1611, 12445), (1965, 10203), (2489, 8055), (2685, 7467), (3401, 5895)]