20568975

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{193}}^1$

素因数の和:249

約数の個数: 72

約数和(自身を含む): 41135760

約数和(自身を除く): 20566785

約数列:

[1, 3, 5, 7, 15, 21, 25, 29, 35, 49, 75, 87, 105, 145, 147, 175, 193, 203, 245, 435, 525, 579, 609, 725, 735, 965, 1015, 1225, 1351, 1421, 2175, 2895, 3045, 3675, 4053, 4263, 4825, 5075, 5597, 6755, 7105, 9457, 14475, 15225, 16791, 20265, 21315, 27985, 28371, 33775, 35525, 39179, 47285, 83955, 101325, 106575, 117537, 139925, 141855, 195895, 236425, 274253, 419775, 587685, 709275, 822759, 979475, 1371265, 2938425, 4113795, 6856325, 20568975]

約数ペア:

[(1, 20568975), (3, 6856325), (5, 4113795), (7, 2938425), (15, 1371265), (21, 979475), (25, 822759), (29, 709275), (35, 587685), (49, 419775), (75, 274253), (87, 236425), (105, 195895), (145, 141855), (147, 139925), (175, 117537), (193, 106575), (203, 101325), (245, 83955), (435, 47285), (525, 39179), (579, 35525), (609, 33775), (725, 28371), (735, 27985), (965, 21315), (1015, 20265), (1225, 16791), (1351, 15225), (1421, 14475), (2175, 9457), (2895, 7105), (3045, 6755), (3675, 5597), (4053, 5075), (4263, 4825)]