21875805

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{3307}}^1$

素因数の和:3335

約数の個数: 48

約数和(自身を含む): 45253440

約数和(自身を除く): 23377635

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 105, 135, 147, 189, 245, 315, 441, 735, 945, 1323, 2205, 3307, 6615, 9921, 16535, 23149, 29763, 49605, 69447, 89289, 115745, 148815, 162043, 208341, 347235, 446445, 486129, 625023, 810215, 1041705, 1458387, 2430645, 3125115, 4375161, 7291935, 21875805]

約数ペア:

[(1, 21875805), (3, 7291935), (5, 4375161), (7, 3125115), (9, 2430645), (15, 1458387), (21, 1041705), (27, 810215), (35, 625023), (45, 486129), (49, 446445), (63, 347235), (105, 208341), (135, 162043), (147, 148815), (189, 115745), (245, 89289), (315, 69447), (441, 49605), (735, 29763), (945, 23149), (1323, 16535), (2205, 9921), (3307, 6615)]