81871725

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{641}}^1$

素因数の和:798

約数の個数: 48

約数和(自身を含む): 147115584

約数和(自身を除く): 65243859

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 131, 195, 325, 393, 641, 655, 975, 1703, 1923, 1965, 3205, 3275, 5109, 8333, 8515, 9615, 9825, 16025, 24999, 25545, 41665, 42575, 48075, 83971, 124995, 127725, 208325, 251913, 419855, 624975, 1091623, 1259565, 2099275, 3274869, 5458115, 6297825, 16374345, 27290575, 81871725]

約数ペア:

[(1, 81871725), (3, 27290575), (5, 16374345), (13, 6297825), (15, 5458115), (25, 3274869), (39, 2099275), (65, 1259565), (75, 1091623), (131, 624975), (195, 419855), (325, 251913), (393, 208325), (641, 127725), (655, 124995), (975, 83971), (1703, 48075), (1923, 42575), (1965, 41665), (3205, 25545), (3275, 24999), (5109, 16025), (8333, 9825), (8515, 9615)]