216996975

素因数分解:

$3^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{8243}}^1$

素因数の和:8278

約数の個数: 60

約数和(自身を含む): 432925416

約数和(自身を除く): 215928441

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 81, 117, 135, 195, 225, 325, 351, 405, 585, 675, 975, 1053, 1755, 2025, 2925, 5265, 8243, 8775, 24729, 26325, 41215, 74187, 107159, 123645, 206075, 222561, 321477, 370935, 535795, 618225, 667683, 964431, 1112805, 1607385, 1854675, 2678975, 2893293, 3338415, 4822155, 5564025, 8036925, 8679879, 14466465, 16692075, 24110775, 43399395, 72332325, 216996975]

約数ペア:

[(1, 216996975), (3, 72332325), (5, 43399395), (9, 24110775), (13, 16692075), (15, 14466465), (25, 8679879), (27, 8036925), (39, 5564025), (45, 4822155), (65, 3338415), (75, 2893293), (81, 2678975), (117, 1854675), (135, 1607385), (195, 1112805), (225, 964431), (325, 667683), (351, 618225), (405, 535795), (585, 370935), (675, 321477), (975, 222561), (1053, 206075), (1755, 123645), (2025, 107159), (2925, 74187), (5265, 41215), (8243, 26325), (8775, 24729)]